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HTML

              
                <div class="flex sm:flex-row flex-col items-center sm:items-start sm:justify-between m-4">
  <div>
    <div class="grid gap-4 m-4 grid-cols-6">
      <div class="grid gap-2">
        <div class="">Value</div>
        <div class="h-8">100</div>
        <div class="h-8">200</div>
        <div class="h-8">300</div>
        <div class="h-8">400</div>
        <div class="h-8">500</div>
        <div class="h-8">600</div>
        <div class="h-8">700</div>
        <div class="h-8">800</div>
        <div class="h-8">900</div>
      </div>
      <div class="grid gap-2">
        Gray
        <div class="h-8 w-8 bg-gray-100 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-gray-200 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-gray-300 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-gray-400 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-gray-500 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-gray-600 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-gray-700 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-gray-800 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-gray-900 shadow-md rounded"></div>
      </div>
      <div class="grid gap-2">
        Brand
        <div class="h-8 w-8 bg-brand-100 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-brand-200 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-brand-300 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-brand-400 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-brand-500 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-brand-600 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-brand-700 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-brand-800 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-brand-900 shadow-md rounded"></div>
      </div>
      <div class="grid gap-2">
        Confirm
        <div class="h-8 w-8 bg-confirm-100 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-confirm-200 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-confirm-300 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-confirm-400 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-confirm-500 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-confirm-600 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-confirm-700 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-confirm-800 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-confirm-900 shadow-md rounded"></div>
      </div>
      <div class="grid gap-2">
        Danger
        <div class="h-8 w-8 bg-danger-100 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-danger-200 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-danger-300 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-danger-400 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-danger-500 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-danger-600 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-danger-700 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-danger-800 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-danger-900 shadow-md rounded"></div>
      </div>
      <div class="grid gap-2">
        Warning
        <div class="h-8 w-8 bg-warning-100 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-warning-200 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-warning-300 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-warning-400 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-warning-500 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-warning-600 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-warning-700 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-warning-800 shadow-md rounded"></div>
        <div class="h-8 w-8 bg-warning-900 shadow-md rounded"></div>
      </div>
    </div>

    <div class="m-4 p-4 flex items-center text-warning-700 bg-warning-100 border-warning-400 border rounded-lg shadow-sm">
      <svg xmlns="http://www.w3.org/2000/svg" class="h-6 w-6 mr-2" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
        <path stroke-linecap="round" stroke-linejoin="round" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z" />
      </svg>
      Example warning
    </div>

    <div class="m-4 p-4 flex items-center text-danger-700 bg-danger-100 border-danger-400 border rounded-lg shadow-sm">
      <svg xmlns="http://www.w3.org/2000/svg" class="h-6 w-6 mr-2" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
        <path stroke-linecap="round" stroke-linejoin="round" d="M6 18L18 6M6 6l12 12" />
      </svg>
      Example error
    </div>

    <div class="m-4 p-4 flex items-center text-brand-700 bg-brand-100 border-brand-400 border rounded-lg shadow-sm">
      <svg xmlns="http://www.w3.org/2000/svg" class="h-6 w-6 mr-2" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
        <path stroke-linecap="round" stroke-linejoin="round" d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
      </svg>
      Example info
    </div>

    <div class="m-4 p-4 flex items-center text-confirm-700 bg-confirm-100 border-confirm-400 border rounded-lg shadow-sm">
      <svg xmlns="http://www.w3.org/2000/svg" class="h-6 w-6 mr-2" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2">
        <path stroke-linecap="round" stroke-linejoin="round" d="M5 13l4 4L19 7" />
      </svg>
      Example confirmation
    </div>

    <button class="m-4 button">
      Button
    </button>

    <button class="m-4 button button-confirm">
      Confirm
    </button>

    <button class="m-4 button button-danger">
      Delete
    </button>

    <button class="m-4 button button-gray">
      Search
    </button>
    
    <button class="m-4 button button-secondary">
      Log in
    </button>

    <button class="m-4 button button-plain">
      Cancel
    </button>
  </div>
  <div class="order-first sm:order-last">
    <div class="mt-4 flex flex-col items-center">
      <div class="flex items-center gap-2">
        Brand color value <input class="mx-auto" type="color" id="usr-clr" oninput="getColor()">
      </div>
    </div>
    <div class="mt-12 mx-auto flex flex-col items-center gap-2">
      <div class="flex items-center gap-2">
        100 <input class="range-100" id="rangeOneHundred" type="range" min="0" max="1" step=".01" value="0.92" oninput="rangeOneHundredOutput.value = rangeOneHundred.value"> <output id="rangeOneHundredOutput" class="w-8">0.92</output>
      </div>
      <div class="flex items-center gap-2">
        200 <input class="range-200" id="rangeTwoHundred" type="range" min="0" max="1" step=".01" value="0.86" oninput="rangeTwoHundredOutput.value = rangeTwoHundred.value"> <output id="rangeTwoHundredOutput" class="w-8">0.86</output>
      </div>
      <div class="flex items-center gap-2">
        300 <input class="range-300" id="rangeThreeHundred" type="range" min="0" max="1" step=".01" value="0.65" oninput="rangeThreeHundredOutput.value = rangeThreeHundred.value"> <output id="rangeThreeHundredOutput" class="w-8">0.65</output>
      </div>
      <div class="flex items-center gap-2">
        400 <input class="range-400" id="rangeFourHundred" type="range" min="0" max="1" step=".01" value="0.21" oninput="rangeFourHundredOutput.value = rangeFourHundred.value"> <output id="rangeFourHundredOutput" class="w-8">0.21</output>
      </div>
      <div class="flex items-center gap-2">
        600 <input class="range-600" id="rangeSixHundred" type="range" min="0" max="1" step=".01" value="0.17" oninput="rangeSixHundredOutput.value = rangeSixHundred.value"> <output id="rangeSixHundredOutput" class="w-8">0.17</output>
      </div>
      <div class="flex items-center gap-2">
        700 <input class="range-700" id="rangeSevenHundred" type="range" min="0" max="1" step=".01" value="0.29" oninput="rangeSevenHundredOutput.value = rangeSevenHundred.value"> <output id="rangeSevenHundredOutput" class="w-8">0.29</output>
      </div>
      <div class="flex items-center gap-2">
        800 <input class="range-800" id="rangeEightHundred" type="range" min="0" max="1" step=".01" value="0.4" oninput="rangeEightHundredOutput.value = rangeEightHundred.value"> <output id="rangeEightHundredOutput" class="w-8">0.4</output>
      </div>
      <div class="flex items-center gap-2">
        900 <input class="range-900" id="rangeNineHundred" type="range" min="0" max="1" step=".01" value="0.57" oninput="rangeNineHundredOutput.value = rangeNineHundred.value"> <output id="rangeNineHundredOutput" class="w-8">0.57</output>
      </div>
    </div>
  </div>
</div>
              
            
!

CSS

              
                :root { 
  --step-100-value: 0.92;
  --step-200-value: 0.86;
  --step-300-value: 0.65;
  --step-400-value: 0.21;
  --step-600-value: 0.17;
  --step-700-value: 0.29;
  --step-800-value: 0.4;
  --step-900-value: 0.57;

  /* Brand theme configuration */
  --theme-brand-h: 201;
  --theme-brand-s: 70%;
  --theme-brand-l: 40%;
  --theme-brand-900: hsl(
    var(--theme-brand-h),
    var(--theme-brand-s),
    calc(
      var(--theme-brand-l) - calc(var(--theme-brand-l) * var(--step-900-value))
    )
  );
  --theme-brand-800: hsl(
    var(--theme-brand-h),
    var(--theme-brand-s),
    calc(
      var(--theme-brand-l) - calc(var(--theme-brand-l) * var(--step-800-value))
    )
  );
  --theme-brand-700: hsl(
    var(--theme-brand-h),
    var(--theme-brand-s),
    calc(
      var(--theme-brand-l) - calc(var(--theme-brand-l) * var(--step-700-value))
    )
  );
  --theme-brand-600: hsl(
    var(--theme-brand-h),
    var(--theme-brand-s),
    calc(
      var(--theme-brand-l) - calc(var(--theme-brand-l) * var(--step-600-value))
    )
  );
  --theme-brand-500: hsl(
    var(--theme-brand-h),
    var(--theme-brand-s),
    var(--theme-brand-l)
  );
  --theme-brand-400: hsl(
    var(--theme-brand-h),
    var(--theme-brand-s),
    calc(
      var(--theme-brand-l) +
        calc(calc(100% - var(--theme-brand-l)) * var(--step-400-value))
    )
  );
  --theme-brand-300: hsl(
    var(--theme-brand-h),
    var(--theme-brand-s),
    calc(
      var(--theme-brand-l) +
        calc(calc(100% - var(--theme-brand-l)) * var(--step-300-value))
    )
  );
  --theme-brand-200: hsl(
    var(--theme-brand-h),
    var(--theme-brand-s),
    calc(
      var(--theme-brand-l) +
        calc(calc(100% - var(--theme-brand-l)) * var(--step-200-value))
    )
  );
  --theme-brand-100: hsl(
    var(--theme-brand-h),
    var(--theme-brand-s),
    calc(
      var(--theme-brand-l) +
        calc(calc(100% - var(--theme-brand-l)) * var(--step-100-value))
    )
  );
  --theme-brand-500-25: hsla(
    var(--theme-brand-h),
    var(--theme-brand-s),
    var(--theme-brand-l),
    0.25
  );
  /* Danger theme configuration */
  --theme-danger-h: 7;
  --theme-danger-s: 72%;
  --theme-danger-l: 65%;
  --theme-danger-900: hsl(
    var(--theme-danger-h),
    var(--theme-danger-s),
    calc(
      var(--theme-danger-l) -
        calc(var(--theme-danger-l) * var(--step-900-value))
    )
  );
  --theme-danger-800: hsl(
    var(--theme-danger-h),
    var(--theme-danger-s),
    calc(
      var(--theme-danger-l) -
        calc(var(--theme-danger-l) * var(--step-800-value))
    )
  );
  --theme-danger-700: hsl(
    var(--theme-danger-h),
    var(--theme-danger-s),
    calc(
      var(--theme-danger-l) -
        calc(var(--theme-danger-l) * var(--step-700-value))
    )
  );
  --theme-danger-600: hsl(
    var(--theme-danger-h),
    var(--theme-danger-s),
    calc(
      var(--theme-danger-l) -
        calc(var(--theme-danger-l) * var(--step-600-value))
    )
  );
  --theme-danger-500: hsl(
    var(--theme-danger-h),
    var(--theme-danger-s),
    var(--theme-danger-l)
  );
  --theme-danger-400: hsl(
    var(--theme-danger-h),
    var(--theme-danger-s),
    calc(
      var(--theme-danger-l) +
        calc(calc(100% - var(--theme-danger-l)) * var(--step-400-value))
    )
  );
  --theme-danger-300: hsl(
    var(--theme-danger-h),
    var(--theme-danger-s),
    calc(
      var(--theme-danger-l) +
        calc(calc(100% - var(--theme-danger-l)) * var(--step-300-value))
    )
  );
  --theme-danger-200: hsl(
    var(--theme-danger-h),
    var(--theme-danger-s),
    calc(
      var(--theme-danger-l) +
        calc(calc(100% - var(--theme-danger-l)) * var(--step-200-value))
    )
  );
  --theme-danger-100: hsl(
    var(--theme-danger-h),
    var(--theme-danger-s),
    calc(
      var(--theme-danger-l) +
        calc(calc(100% - var(--theme-danger-l)) * var(--step-100-value))
    )
  );
  --theme-danger-500-25: hsla(
    var(--theme-danger-h),
    var(--theme-danger-s),
    var(--theme-danger-l),
    0.25
  );
  /* Confirm theme configuration */
  --theme-confirm-h: 150;
  --theme-confirm-s: 40%;
  --theme-confirm-l: 57%;
  --theme-confirm-900: hsl(
    var(--theme-confirm-h),
    var(--theme-confirm-s),
    calc(
      var(--theme-confirm-l) -
        calc(var(--theme-confirm-l) * var(--step-900-value))
    )
  );
  --theme-confirm-800: hsl(
    var(--theme-confirm-h),
    var(--theme-confirm-s),
    calc(
      var(--theme-confirm-l) -
        calc(var(--theme-confirm-l) * var(--step-800-value))
    )
  );
  --theme-confirm-700: hsl(
    var(--theme-confirm-h),
    var(--theme-confirm-s),
    calc(
      var(--theme-confirm-l) -
        calc(var(--theme-confirm-l) * var(--step-700-value))
    )
  );
  --theme-confirm-600: hsl(
    var(--theme-confirm-h),
    var(--theme-confirm-s),
    calc(
      var(--theme-confirm-l) -
        calc(var(--theme-confirm-l) * var(--step-600-value))
    )
  );
  --theme-confirm-500: hsl(
    var(--theme-confirm-h),
    var(--theme-confirm-s),
    var(--theme-confirm-l)
  );
  --theme-confirm-400: hsl(
    var(--theme-confirm-h),
    var(--theme-confirm-s),
    calc(
      var(--theme-confirm-l) +
        calc(calc(100% - var(--theme-confirm-l)) * var(--step-400-value))
    )
  );
  --theme-confirm-300: hsl(
    var(--theme-confirm-h),
    var(--theme-confirm-s),
    calc(
      var(--theme-confirm-l) +
        calc(calc(100% - var(--theme-confirm-l)) * var(--step-300-value))
    )
  );
  --theme-confirm-200: hsl(
    var(--theme-confirm-h),
    var(--theme-confirm-s),
    calc(
      var(--theme-confirm-l) +
        calc(calc(100% - var(--theme-confirm-l)) * var(--step-200-value))
    )
  );
  --theme-confirm-100: hsl(
    var(--theme-confirm-h),
    var(--theme-confirm-s),
    calc(
      var(--theme-confirm-l) +
        calc(calc(100% - var(--theme-confirm-l)) * var(--step-100-value))
    )
  );
  --theme-confirm-500-25: hsla(
    var(--theme-confirm-h),
    var(--theme-confirm-s),
    var(--theme-confirm-l),
    0.25
  );
  /* Warning theme configuration */
  --theme-warning-h: 41;
  --theme-warning-s: 69%;
  --theme-warning-l: 68%;
  --theme-warning-900: hsl(
    var(--theme-warning-h),
    var(--theme-warning-s),
    calc(
      var(--theme-warning-l) -
        calc(var(--theme-warning-l) * var(--step-900-value))
    )
  );
  --theme-warning-800: hsl(
    var(--theme-warning-h),
    var(--theme-warning-s),
    calc(
      var(--theme-warning-l) -
        calc(var(--theme-warning-l) * var(--step-800-value))
    )
  );
  --theme-warning-700: hsl(
    var(--theme-warning-h),
    var(--theme-warning-s),
    calc(
      var(--theme-warning-l) -
        calc(var(--theme-warning-l) * var(--step-700-value))
    )
  );
  --theme-warning-600: hsl(
    var(--theme-warning-h),
    var(--theme-warning-s),
    calc(
      var(--theme-warning-l) -
        calc(var(--theme-warning-l) * var(--step-600-value))
    )
  );
  --theme-warning-500: hsl(
    var(--theme-warning-h),
    var(--theme-warning-s),
    var(--theme-warning-l)
  );
  --theme-warning-400: hsl(
    var(--theme-warning-h),
    var(--theme-warning-s),
    calc(
      var(--theme-warning-l) +
        calc(calc(100% - var(--theme-warning-l)) * var(--step-400-value))
    )
  );
  --theme-warning-300: hsl(
    var(--theme-warning-h),
    var(--theme-warning-s),
    calc(
      var(--theme-warning-l) +
        calc(calc(100% - var(--theme-warning-l)) * var(--step-300-value))
    )
  );
  --theme-warning-200: hsl(
    var(--theme-warning-h),
    var(--theme-warning-s),
    calc(
      var(--theme-warning-l) +
        calc(calc(100% - var(--theme-warning-l)) * var(--step-200-value))
    )
  );
  --theme-warning-100: hsl(
    var(--theme-warning-h),
    var(--theme-warning-s),
    calc(
      var(--theme-warning-l) +
        calc(calc(100% - var(--theme-warning-l)) * var(--step-100-value))
    )
  );
  --theme-warning-500-25: hsla(
    var(--theme-warning-h),
    var(--theme-warning-s),
    var(--theme-warning-l),
    0.25
  );
  /* Gray theme configuration */
  --theme-gray-h: 0;
  --theme-gray-s: 0%;
  --theme-gray-l: 57%;
  --theme-gray-900: hsl(
    var(--theme-gray-h),
    var(--theme-gray-s),
    calc(
      var(--theme-gray-l) - calc(var(--theme-gray-l) * var(--step-900-value))
    )
  );
  --theme-gray-800: hsl(
    var(--theme-gray-h),
    var(--theme-gray-s),
    calc(
      var(--theme-gray-l) - calc(var(--theme-gray-l) * var(--step-800-value))
    )
  );
  --theme-gray-700: hsl(
    var(--theme-gray-h),
    var(--theme-gray-s),
    calc(
      var(--theme-gray-l) - calc(var(--theme-gray-l) * var(--step-700-value))
    )
  );
  --theme-gray-600: hsl(
    var(--theme-gray-h),
    var(--theme-gray-s),
    calc(
      var(--theme-gray-l) - calc(var(--theme-gray-l) * var(--step-600-value))
    )
  );
  --theme-gray-500: hsl(
    var(--theme-gray-h),
    var(--theme-gray-s),
    var(--theme-gray-l)
  );
  --theme-gray-400: hsl(
    var(--theme-gray-h),
    var(--theme-gray-s),
    calc(
      var(--theme-gray-l) +
        calc(calc(100% - var(--theme-gray-l)) * var(--step-400-value))
    )
  );
  --theme-gray-300: hsl(
    var(--theme-gray-h),
    var(--theme-gray-s),
    calc(
      var(--theme-gray-l) +
        calc(calc(100% - var(--theme-gray-l)) * var(--step-300-value))
    )
  );
  --theme-gray-200: hsl(
    var(--theme-gray-h),
    var(--theme-gray-s),
    calc(
      var(--theme-gray-l) +
        calc(calc(100% - var(--theme-gray-l)) * var(--step-200-value))
    )
  );
  --theme-gray-100: hsl(
    var(--theme-gray-h),
    var(--theme-gray-s),
    calc(
      var(--theme-gray-l) +
        calc(calc(100% - var(--theme-gray-l)) * var(--step-100-value))
    )
  );
  --theme-gray-500-25: hsla(
    var(--theme-gray-h),
    var(--theme-gray-s),
    var(--theme-gray-l),
    0.25
  );

  /* Base configuration */
  --theme-body-font-family: Avenir, sans-serif;
  --theme-body-font-size: 16px;
  --theme-body-background-color: #f9f8f7;
  --theme-form-size: 2.5rem;
  --theme-form-size--sm: 2rem;
  --theme-form-size--lg: 3.5rem;
  --theme-form-focus-ring: 0 0 0 0.25rem var(--theme-primary-400-025);

  /* Button configuration */
  --theme-button-border-radius: 0.5rem;
  --theme-button-border-width: 0;
  --theme-button-font: inherit;
  --theme-button-padding: 0 1rem;
  --theme-button-box-shadow: 0 0.125rem 0.3125rem 0 rgba(0, 0, 0, 0.03),
    0 0.3125rem 1rem 0 rgba(0, 0, 0, 0.04);

  --theme-button-box-shadow--lg: 0 1.75rem 2.8125rem rgba(0, 0, 0, 0.07),
    0 0.5rem 0.875rem rgba(0, 0, 0, 0.045),
    0 0.25rem 0.375rem rgba(0, 0, 0, 0.035),
    0 0.125rem 0.25rem rgba(0, 0, 0, 0.025);
  --theme-button-border-radius--lg: 40rem;

  /* Input configuration */
  --theme-input-border-radius: 0.5rem;
  --theme-input-font: inherit;
  --theme-input-padding: 0 0.6rem;
  --theme-input-box-shadow: 0 0.125rem 0.3125rem 0 rgba(0, 0, 0, 0.03),
    0 0.3125rem 1rem 0 rgba(0, 0, 0, 0.04);

  --theme-input-border-color: #ccc;
  --theme-input-border-width: 1px;
  --theme-input-background-color: #fff;
  --theme-input-color: #35444f;
  --theme-input-placeholder-color: #bfbfbf;

  --theme-textarea-padding: 0.6rem;

  --theme-checkbox-box-shadow: 0 0.275rem 0.175rem 0 rgba(0, 0, 0, 0.02) inset,
    0 0.125rem 0.25rem 0 rgba(0, 0, 0, 0.05) inset,
    0 0.125rem 0.3125rem 0 rgba(0, 0, 0, 0.03),
    0 0.3125rem 1rem 0 rgba(0, 0, 0, 0.04);

  /* Icon configuration */
  --theme-icon-stroke-width: 2;
  --theme-icon-stroke-linecap: round;
  --theme-icon-stroke-linejoin: round;
}

html {
  font-size: var(--theme-body-font-size);
}

body {
  background-color: var(--theme-body-background-color);
  font-family: var(--theme-body-font-family);
}

.bg-brand-900 {
  background-color: var(--theme-brand-900);
}
.bg-brand-800 {
  background-color: var(--theme-brand-800);
}
.bg-brand-700 {
  background-color: var(--theme-brand-700);
}
.bg-brand-600 {
  background-color: var(--theme-brand-600);
}
.bg-brand-500 {
  background-color: var(--theme-brand-500);
}
.bg-brand-400 {
  background-color: var(--theme-brand-400);
}
.bg-brand-300 {
  background-color: var(--theme-brand-300);
}
.bg-brand-200 {
  background-color: var(--theme-brand-200);
}
.bg-brand-100 {
  background-color: var(--theme-brand-100);
}
.bg-brand-50 {
  background-color: var(--theme-brand-50);
}

.border-brand-900 {
  border-color: var(--theme-brand-900);
}
.border-brand-800 {
  border-color: var(--theme-brand-800);
}
.border-brand-700 {
  border-color: var(--theme-brand-700);
}
.border-brand-600 {
  border-color: var(--theme-brand-600);
}
.border-brand-500 {
  border-color: var(--theme-brand-500);
}
.border-brand-400 {
  border-color: var(--theme-brand-400);
}
.border-brand-300 {
  border-color: var(--theme-brand-300);
}
.border-brand-200 {
  border-color: var(--theme-brand-200);
}
.border-brand-100 {
  border-color: var(--theme-brand-100);
}
.border-brand-50 {
  border-color: var(--theme-brand-50);
}

.text-brand-900 {
  color: var(--theme-brand-900);
}
.text-brand-800 {
  color: var(--theme-brand-800);
}
.text-brand-700 {
  color: var(--theme-brand-700);
}
.text-brand-600 {
  color: var(--theme-brand-600);
}
.text-brand-500 {
  color: var(--theme-brand-500);
}
.text-brand-400 {
  color: var(--theme-brand-400);
}
.text-brand-300 {
  color: var(--theme-brand-300);
}
.text-brand-200 {
  color: var(--theme-brand-200);
}
.text-brand-100 {
  color: var(--theme-brand-100);
}
.text-brand-50 {
  color: var(--theme-brand-50);
}

.ring-brand,
.focus\:ring-brand:focus {
  box-shadow: 0 0 0 0.25rem var(--theme-brand-400-25);
}

.bg-confirm-900 {
  background-color: var(--theme-confirm-900);
}
.bg-confirm-800 {
  background-color: var(--theme-confirm-800);
}
.bg-confirm-700 {
  background-color: var(--theme-confirm-700);
}
.bg-confirm-600 {
  background-color: var(--theme-confirm-600);
}
.bg-confirm-500 {
  background-color: var(--theme-confirm-500);
}
.bg-confirm-400 {
  background-color: var(--theme-confirm-400);
}
.bg-confirm-300 {
  background-color: var(--theme-confirm-300);
}
.bg-confirm-200 {
  background-color: var(--theme-confirm-200);
}
.bg-confirm-100 {
  background-color: var(--theme-confirm-100);
}
.bg-confirm-50 {
  background-color: var(--theme-confirm-50);
}

.border-confirm-900 {
  border-color: var(--theme-confirm-900);
}
.border-confirm-800 {
  border-color: var(--theme-confirm-800);
}
.border-confirm-700 {
  border-color: var(--theme-confirm-700);
}
.border-confirm-600 {
  border-color: var(--theme-confirm-600);
}
.border-confirm-500 {
  border-color: var(--theme-confirm-500);
}
.border-confirm-400 {
  border-color: var(--theme-confirm-400);
}
.border-confirm-300 {
  border-color: var(--theme-confirm-300);
}
.border-confirm-200 {
  border-color: var(--theme-confirm-200);
}
.border-confirm-100 {
  border-color: var(--theme-confirm-100);
}
.border-confirm-50 {
  border-color: var(--theme-confirm-50);
}

.text-confirm-900 {
  color: var(--theme-confirm-900);
}
.text-confirm-800 {
  color: var(--theme-confirm-800);
}
.text-confirm-700 {
  color: var(--theme-confirm-700);
}
.text-confirm-600 {
  color: var(--theme-confirm-600);
}
.text-confirm-500 {
  color: var(--theme-confirm-500);
}
.text-confirm-400 {
  color: var(--theme-confirm-400);
}
.text-confirm-300 {
  color: var(--theme-confirm-300);
}
.text-confirm-200 {
  color: var(--theme-confirm-200);
}
.text-confirm-100 {
  color: var(--theme-confirm-100);
}
.text-confirm-50 {
  color: var(--theme-confirm-50);
}

.ring-theme-confirm,
.focus\:ring-theme-confirm:focus {
  box-shadow: 0 0 0 4px var(--theme-confirm-400-25);
}

.bg-warning-900 {
  background-color: var(--theme-warning-900);
}
.bg-warning-800 {
  background-color: var(--theme-warning-800);
}
.bg-warning-700 {
  background-color: var(--theme-warning-700);
}
.bg-warning-600 {
  background-color: var(--theme-warning-600);
}
.bg-warning-500 {
  background-color: var(--theme-warning-500);
}
.bg-warning-400 {
  background-color: var(--theme-warning-400);
}
.bg-warning-300 {
  background-color: var(--theme-warning-300);
}
.bg-warning-200 {
  background-color: var(--theme-warning-200);
}
.bg-warning-100 {
  background-color: var(--theme-warning-100);
}
.bg-warning-50 {
  background-color: var(--theme-warning-50);
}

.border-warning-900 {
  border-color: var(--theme-warning-900);
}
.border-warning-800 {
  border-color: var(--theme-warning-800);
}
.border-warning-700 {
  border-color: var(--theme-warning-700);
}
.border-warning-600 {
  border-color: var(--theme-warning-600);
}
.border-warning-500 {
  border-color: var(--theme-warning-500);
}
.border-warning-400 {
  border-color: var(--theme-warning-400);
}
.border-warning-300 {
  border-color: var(--theme-warning-300);
}
.border-warning-200 {
  border-color: var(--theme-warning-200);
}
.border-warning-100 {
  border-color: var(--theme-warning-100);
}
.border-warning-50 {
  border-color: var(--theme-warning-50);
}

.text-warning-900 {
  color: var(--theme-warning-900);
}
.text-warning-800 {
  color: var(--theme-warning-800);
}
.text-warning-700 {
  color: var(--theme-warning-700);
}
.text-warning-600 {
  color: var(--theme-warning-600);
}
.text-warning-500 {
  color: var(--theme-warning-500);
}
.text-warning-400 {
  color: var(--theme-warning-400);
}
.text-warning-300 {
  color: var(--theme-warning-300);
}
.text-warning-200 {
  color: var(--theme-warning-200);
}
.text-warning-100 {
  color: var(--theme-warning-100);
}
.text-warning-50 {
  color: var(--theme-warning-50);
}

.ring-theme-warning,
.focus\:ring-theme-warning:focus {
  box-shadow: 0 0 0 4px var(--theme-warning-400-25);
}

.bg-danger-900 {
  background-color: var(--theme-danger-900);
}
.bg-danger-800 {
  background-color: var(--theme-danger-800);
}
.bg-danger-700 {
  background-color: var(--theme-danger-700);
}
.bg-danger-600 {
  background-color: var(--theme-danger-600);
}
.bg-danger-500 {
  background-color: var(--theme-danger-500);
}
.bg-danger-400 {
  background-color: var(--theme-danger-400);
}
.bg-danger-300 {
  background-color: var(--theme-danger-300);
}
.bg-danger-200 {
  background-color: var(--theme-danger-200);
}
.bg-danger-100 {
  background-color: var(--theme-danger-100);
}
.bg-danger-50 {
  background-color: var(--theme-danger-50);
}

.border-danger-900 {
  border-color: var(--theme-danger-900);
}
.border-danger-800 {
  border-color: var(--theme-danger-800);
}
.border-danger-700 {
  border-color: var(--theme-danger-700);
}
.border-danger-600 {
  border-color: var(--theme-danger-600);
}
.border-danger-500 {
  border-color: var(--theme-danger-500);
}
.border-danger-400 {
  border-color: var(--theme-danger-400);
}
.border-danger-300 {
  border-color: var(--theme-danger-300);
}
.border-danger-200 {
  border-color: var(--theme-danger-200);
}
.border-danger-100 {
  border-color: var(--theme-danger-100);
}
.border-danger-50 {
  border-color: var(--theme-danger-50);
}

.text-danger-900 {
  color: var(--theme-danger-900);
}
.text-danger-800 {
  color: var(--theme-danger-800);
}
.text-danger-700 {
  color: var(--theme-danger-700);
}
.text-danger-600 {
  color: var(--theme-danger-600);
}
.text-danger-500 {
  color: var(--theme-danger-500);
}
.text-danger-400 {
  color: var(--theme-danger-400);
}
.text-danger-300 {
  color: var(--theme-danger-300);
}
.text-danger-200 {
  color: var(--theme-danger-200);
}
.text-danger-100 {
  color: var(--theme-danger-100);
}
.text-danger-50 {
  color: var(--theme-danger-50);
}

.ring-theme-danger,
.focus\:ring-theme-danger:focus {
  box-shadow: 0 0 0 4px var(--theme-danger-400-25);
}

.bg-gray-900 {
  background-color: var(--theme-gray-900);
}
.bg-gray-800 {
  background-color: var(--theme-gray-800);
}
.bg-gray-700 {
  background-color: var(--theme-gray-700);
}
.bg-gray-600 {
  background-color: var(--theme-gray-600);
}
.bg-gray-500 {
  background-color: var(--theme-gray-500);
}
.bg-gray-400 {
  background-color: var(--theme-gray-400);
}
.bg-gray-300 {
  background-color: var(--theme-gray-300);
}
.bg-gray-200 {
  background-color: var(--theme-gray-200);
}
.bg-gray-100 {
  background-color: var(--theme-gray-100);
}
.bg-gray-50 {
  background-color: var(--theme-gray-50);
}

.border-gray-900 {
  border-color: var(--theme-gray-900);
}
.border-gray-800 {
  border-color: var(--theme-gray-800);
}
.border-gray-700 {
  border-color: var(--theme-gray-700);
}
.border-gray-600 {
  border-color: var(--theme-gray-600);
}
.border-gray-500 {
  border-color: var(--theme-gray-500);
}
.border-gray-400 {
  border-color: var(--theme-gray-400);
}
.border-gray-300 {
  border-color: var(--theme-gray-300);
}
.border-gray-200 {
  border-color: var(--theme-gray-200);
}
.border-gray-100 {
  border-color: var(--theme-gray-100);
}
.border-gray-50 {
  border-color: var(--theme-gray-50);
}

.text-gray-900 {
  color: var(--theme-gray-900);
}
.text-gray-800 {
  color: var(--theme-gray-800);
}
.text-gray-700 {
  color: var(--theme-gray-700);
}
.text-gray-600 {
  color: var(--theme-gray-600);
}
.text-gray-500 {
  color: var(--theme-gray-500);
}
.text-gray-400 {
  color: var(--theme-gray-400);
}
.text-gray-300 {
  color: var(--theme-gray-300);
}
.text-gray-200 {
  color: var(--theme-gray-200);
}
.text-gray-100 {
  color: var(--theme-gray-100);
}
.text-gray-50 {
  color: var(--theme-gray-50);
}

.ring-theme-gray,
.focus\:ring-theme-gray:focus {
  box-shadow: 0 0 0 4px var(--theme-gray-400-25);
}

.button {
  --switch: calc((var(--theme-brand-l) - 70%) * -100);
  color: hsl(0, 0%, var(--switch));
  height: var(--theme-form-size);
  display: block;
  cursor: pointer;
  background-color: var(--theme-brand-500);
  border-radius: var(--theme-button-border-radius);
  font-family: var(--theme-button-font-family);
  padding: var(--theme-button-padding);
  box-shadow: var(--theme-button-box-shadow);
}

.button:hover {
  background-color: var(--theme-brand-600);
}

.button:active {
  background-color: var(--theme-brand-700);
}

.button.is-selected {
  background-color: var(--theme-brand-800);
}

.button:focus,
.button.button-plain:focus,
.button.button-lg:focus {
  outline: none;
  box-shadow: var(--theme-form-focus-ring);
}

.button:disabled {
  opacity: 0.5;
}

.button.button-sm {
  height: var(--theme-form-size--sm);
}

.button.button-plain {
  background-color: transparent;
  color: var(--theme-gray-800);
  box-shadow: none;
}

.button.button-plain:hover {
  background-color: var(--theme-gray-200);
}

.button.button-lg {
  height: var(--theme-form-size--lg);
  border-radius: var(--theme-button-border-radius--lg);
  box-shadow: var(--theme-button-box-shadow--lg);
}

.button.button-danger {
  color: hsl(0, 0%, calc((var(--theme-danger-l) - 70%) * -100));
  background-color: var(--theme-danger-500);
}

.button.button-danger:hover {
  background-color: var(--theme-danger-600);
}

.button.button-danger:active {
  background-color: var(--theme-danger-700);
}

.button.button-danger.is-selected {
  background-color: var(--theme-danger-800);
}

.button.button-danger:focus,
.button.button-danger.button-lg:focus {
  outline: none;
  box-shadow: 0 0 0 0.25rem var(--theme-danger-500-25);
}

.button.button-confirm {
  color: hsl(0, 0%, calc((var(--theme-confirm-l) - 70%) * -100));
  background-color: var(--theme-confirm-500);
}

.button.button-secondary {
  border-color: var(--theme-brand-500);
  border-width: 1px;
  background-color: transparent;
  color: var(--theme-brand-500);
}

.button.button-secondary:hover {
  background-color: var(--theme-brand-100);
}

.button.button-secondary:active {
  background-color: var(--theme-brand-200);
}

.button.button-secondary.is-selected {
  background-color: var(--theme-brand-300);
  color: var(--theme-brand-900);
}

.button.button-confirm:hover {
  background-color: var(--theme-confirm-600);
}

.button.button-confirm:active {
  background-color: var(--theme-confirm-700);
}

.button.button-confirm.is-selected {
  background-color: var(--theme-confirm-800);
}

.button.button-confirm:focus,
.button.button-confirm.button-lg:focus {
  outline: none;
  box-shadow: 0 0 0 0.25rem var(--theme-confirm-500-25);
}

.button.button-gray {
  color: #fff;
  background-color: var(--theme-gray-500);
}

.button.button-gray:hover {
  background-color: var(--theme-gray-600);
}

.button.button-gray:active {
  background-color: var(--theme-gray-700);
}

.button.button-gray.is-selected {
  background-color: var(--theme-gray-800);
}

.button.button-gray:focus,
.button.button-gray.button-lg:focus {
  outline: none;
  box-shadow: 0 0 0 0.25rem var(--theme-gray-500-25);
}

.input {
  height: var(--theme-form-size);
  width: 100%;
  font-family: var(--theme-input-font-family);
  padding: var(--theme-input-padding);
  box-shadow: var(--theme-input-box-shadow);
  background-color: var(--theme-input-background-color);
  border-width: var(--theme-input-border-width);
  border-color: var(--theme-input-border-color);
  border-radius: var(--theme-input-border-radius);
  color: var(--theme-input-color);
}

.input::placeholder {
  color: var(--theme-input-placeholder-color);
}

.input:focus {
  outline: none;
  border-color: var(--theme-brand-400);
  box-shadow: var(--theme-form-focus-ring);
}

.input:disabled {
  opacity: 0.5;
}

.input.input-sm {
  height: var(--theme-form-size--sm);
}

.label {
  font-weight: 500;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06rem;
  margin-left: 0.6rem;
  margin-bottom: 0.25rem;
}

.checkbox {
  height: var(--theme-form-size);
  width: var(--theme-form-size);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  display: block;
  flex-shrink: 0;

  border-width: var(--theme-input-border-width);
  border-color: var(--theme-input-border-color);
  border-radius: var(--theme-input-border-radius);
  background-color: var(--theme-input-background-color);
  box-shadow: var(--theme-checkbox-box-shadow);
}

.checkbox:focus {
  outline: none;
  border-color: var(--theme-brand-400);
  box-shadow: var(--theme-form-focus-ring);
}

.checkbox:checked {
  background-color: #1d7cae;
  border-color: #1d7cae;
  background-position: center center;
  background-repeat: no-repeat;
  background-image: url("data:image/svg+xml,%3Csvg width='24' height='24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M19.813 6.187c.45.449.45 1.177 0 1.626l-10 10a1.15 1.15 0 0 1-1.626 0l-4-4a1.15 1.15 0 0 1 1.626-1.626L9 15.374l9.187-9.187a1.15 1.15 0 0 1 1.626 0Z' fill='%23fff'/%3E%3C/svg%3E");
}

.checkbox:disabled {
  opacity: 0.5;
}

.checkbox.checkbox-sm {
  width: var(--theme-form-size--sm);
  height: var(--theme-form-size--sm);
}

.select {
  height: var(--theme-form-size);
  width: 100%;
  font-family: var(--theme-input-font-family);
  padding: var(--theme-input-padding);
  box-shadow: var(--theme-input-box-shadow);
  background-color: var(--theme-input-background-color);
  border-width: var(--theme-input-border-width);
  border-color: var(--theme-input-border-color);
  border-radius: var(--theme-input-border-radius);
  color: var(--theme-input-color);

  display: inline-block;
  box-sizing: border-box;
  -webkit-appearance: none;
  -moz-appearance: none;

  background-position: right 0.6rem center;
  background-repeat: no-repeat;
  background-image: url("data:image/svg+xml,%3Csvg width='16' height='9' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M15 1 8 8 1 1' stroke='%2335444F' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

.select:focus {
  outline: none;
  border-color: var(--theme-brand-400);
  box-shadow: var(--theme-form-focus-ring);
}

.textarea {
  width: 100%;
  font-family: var(--theme-input-font-family);
  padding: var(--theme-textarea-padding);
  box-shadow: var(--theme-input-box-shadow);
  background-color: var(--theme-input-background-color);
  border-width: var(--theme-input-border-width);
  border-color: var(--theme-input-border-color);
  border-radius: var(--theme-input-border-radius);
  color: var(--theme-input-color);
}

.textarea::placeholder {
  color: var(--theme-input-placeholder-color);
}

.textarea:focus {
  outline: none;
  border-color: var(--theme-brand-400);
  box-shadow: var(--theme-form-focus-ring);
}

.textarea:disabled {
  opacity: 0.5;
}

              
            
!

JS

              
                const root = document.documentElement;
const range100 = document.querySelector('.range-100');
const range200 = document.querySelector('.range-200');
const range300 = document.querySelector('.range-300');
const range400 = document.querySelector('.range-400');
const range600 = document.querySelector('.range-600');
const range700 = document.querySelector('.range-700');
const range800 = document.querySelector('.range-800');
const range900 = document.querySelector('.range-900');

range100.addEventListener('input', e => root.style.setProperty('--step-100-value', e.target.value));
range200.addEventListener('input', e => root.style.setProperty('--step-200-value', e.target.value));
range300.addEventListener('input', e => root.style.setProperty('--step-300-value', e.target.value));
range400.addEventListener('input', e => root.style.setProperty('--step-400-value', e.target.value));
range600.addEventListener('input', e => root.style.setProperty('--step-600-value', e.target.value));
range700.addEventListener('input', e => root.style.setProperty('--step-700-value', e.target.value));
range800.addEventListener('input', e => root.style.setProperty('--step-800-value', e.target.value));
range900.addEventListener('input', e => root.style.setProperty('--step-900-value', e.target.value));

function getColor() {
    let input = document.querySelector('#usr-clr')
    let color = HexToHSL(input.value)
    
    root.style.setProperty('--theme-brand-h', color.h);
    root.style.setProperty('--theme-brand-s', color.s + '%');
    root.style.setProperty('--theme-brand-l', color.l + '%');
    
    // console.log('hsl(' + color.h + ', ' + color.s + '%, ' + color.l + '%)')
}

function HexToHSL(hex) {
    var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);

    var r = parseInt(result[1], 16);
    var g = parseInt(result[2], 16);
    var b = parseInt(result[3], 16);

    r /= 255, g /= 255, b /= 255;
    var max = Math.max(r, g, b), min = Math.min(r, g, b);
    var h, s, l = (max + min) / 2;

    if(max == min){
        h = s = 0; // achromatic
    } else {
        var d = max - min;
        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
        switch(max) {
            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
            case g: h = (b - r) / d + 2; break;
            case b: h = (r - g) / d + 4; break;
        }
        
        h /= 6;
    }

    s = s*100;
    s = Math.round(s);
    l = l*100;
    l = Math.round(l);
    h = Math.round(360*h);

    return {h, s, l};
}
              
            
!
999px

Console