CodePen Embed - Generated Contrast with Variables

Live

This Pen is owned by Miriam Suzanne on CodePen.

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

https://codepen.io/miriamsuzanne/pen/MWLoKJr.js

{"__browser":{"country":"US","device":"unknown_device","mobile":false,"name":"unknown browser","platform":"unknown_platform","version":"0"},"__constants":{},"__CPDATA":{"domain_iframe":"https://cdpn.io","environment":"production","host":"codepen.io","iframe_allow":"accelerometer *; ambient-light-sensor *; camera *; display-capture *; encrypted-media *; geolocation *; gyroscope *; microphone *; midi *; payment *; vr *; web-share *; serial *; xr-spatial-tracking *","iframe_sandbox":"allow-downloads allow-forms allow-modals allow-pointer-lock allow-popups-to-escape-sandbox allow-popups allow-presentation allow-same-origin allow-scripts allow-top-navigation-by-user-activation"},"__graphql":{"data":{"errors":[{"message":"Cannot return null for non-nullable field Query.sessionUser"}],"data":null},"url":"https://codepen.io/graphql","api":"cprails"},"__pay_stripe_public_key":"pk_live_2GndomDfiklqpSNQn8FrGuwZSMIMzha7DkLJqlYe7IR0ihKAlKdiHg68JJc5eVPt68rzAjzAAVXcUwjySHRCsgjQQ00gtRBUFNH","__pay_braintree_env":"production","__boomboom":{"serve_url":"https://cdpn.io/cpe/boomboom","store_url":"https://codepen.io/cpe/boomboom/store"},"__pageType":"embed","__item":"{\"editor_settings\":{\"auto_run\":true,\"autocomplete\":false,\"code_folding\":true,\"css_pre_processor\":\"none\",\"css_prefix\":\"neither\",\"css_starter\":\"neither\",\"emmet_active\":true,\"font_size\":14,\"font_type\":\"system\",\"format_on_save\":false,\"html_pre_processor\":\"none\",\"indent_with\":\"spaces\",\"js_pre_processor\":\"none\",\"key_bindings\":\"normal\",\"line_numbers\":true,\"line_wrapping\":true,\"match_brackets\":true,\"snippets\":{\"markupSnippets\":{},\"stylesheetSnippets\":{}},\"tab_size\":2,\"theme\":\"twilight\",\"id\":\"ZEPdPpv\",\"auto_save\":true},\"hashid\":\"ZEPdPpv\",\"itemType\":\"pen\",\"resources\":[{\"url\":\"https://codepen.io/miriamsuzanne/pen/MWLoKJr.js\",\"order\":0,\"resource_type\":\"js\",\"par_content\":\"\"}],\"tags\":[],\"id\":73486001,\"user_id\":15542,\"html\":\"<main>\\n  <h1>Complement & Contrast</h1>\\n  <p>\\n    ⚠️ This is a concept demo, \\n    not reliable for generating accessible color contrast.\\n    Since browsers have not implemented gamut-mapping,\\n    high <code>chroma</code> values can impact lightness. ⚠️\\n  </p>\\n</main>\\n\\n<aside id=\\\"controls\\\">\\n  <ground-control set-prop=\\\"--threshold\\\">\\n    <label for=\\\"threshold\\\">threshold</label>\\n    <input id=\\\"threshold\\\" type=\\\"range\\\" min=\\\"0\\\" max=\\\"1\\\" step=\\\"0.01\\\" value=\\\"0.6\\\">\\n    <output for=\\\"threshold\\\"></output>\\n  </ground-control>\\n  <ground-control set-prop=\\\"--lightness\\\">\\n    <label for=\\\"lightness\\\">lightness</label>\\n    <input id=\\\"lightness\\\" type=\\\"range\\\" min=\\\"0\\\" max=\\\"1\\\" step=\\\"0.01\\\" value=\\\"0.35\\\">\\n    <output for=\\\"lightness\\\"></output>\\n  </ground-control>\\n  <ground-control set-prop=\\\"--chroma\\\">\\n    <label for=\\\"chroma\\\">chroma</label>\\n    <input id=\\\"chroma\\\" type=\\\"range\\\" min=\\\"0\\\" max=\\\"0.3\\\" step=\\\"0.001\\\">\\n    <output for=\\\"chroma\\\"></output>\\n  </ground-control>\\n  <ground-control set-prop=\\\"--hue\\\">\\n    <label for=\\\"hue\\\">hue</label>\\n    <input id=\\\"hue\\\" type=\\\"range\\\" min=\\\"0\\\" max=\\\"360\\\">\\n    <output for=\\\"hue\\\"></output>\\n  </ground-control>\\n  <pre>oklch( <output for=\\\"lightness\\\"></output> <output for=\\\"chroma\\\"></output> <output for=\\\"hue\\\" with-units=\\\"deg\\\"></output> )</pre>\\n</aside>\\n\",\"css\":\"html {\\n  --color: oklch(\\n    var(--lightness)\\n    var(--chroma)\\n    var(--hue)\\n  );\\n  --complement: oklch(\\n    var(--lightness)\\n    var(--chroma)\\n    calc(var(--hue) + 180)\\n  );\\n  --toggle: calc((var(--lightness) - var(--threshold, 0.5)) * -100);\\n  --contrast: oklch(\\n    var(--toggle) \\n    0 \\n    var(--chroma)\\n  );\\n}\\n\\nmain {\\n  background: var(--color);\\n  color: var(--contrast);\\n}\\n\\naside {\\n  background: var(--complement);\\n  color: var(--contrast);\\n}\\n\\n\\n@layer reset, base;\\n\\n@layer base {\\n  body {    \\n    --text-small: clamp(0.938rem, 0.824rem + 0.568cqi, 1.25rem);\\n    --text-normal: clamp(1.25rem, 1.023rem + 1.136cqi, 1.875rem);\\n    --text-large: clamp(1.35rem, 0.818rem + 2.659cqi, 2.813rem);\\n    --text-xlarge: clamp(1.7rem, 0.784rem + 4.58cqi, 4.219rem);\\n    --gap: clamp(2cqi, 0.5lh, 5cqi);\\n    font-size: var(--text-normal);\\n    display: grid;\\n  }\\n  \\n  main, aside {\\n    display: grid;\\n    grid-template-columns: minmax(min-content, 45ch);\\n    padding: var(--gap);\\n    place-content: safe center;\\n  }\\n  \\n  h1 {\\n    text-wrap: balance;\\n  }\\n  \\n  ground-control {\\n    display: grid;\\n    gap: var(--gap);\\n    grid-template-columns: 10ch 1fr 4ch;\\n  }\\n  \\n  aside {\\n    font-family: monospace;\\n  }\\n}\\n\\n@layer reset {\\n  * { box-sizing: border-box; }\\n  html { block-size: 100%; }\\n  \\n  body {\\n    margin: unset;\\n    min-block-size: 100%;\\n  }  \\n  \\n  picture { display: contents; }\\n  img { display: block; }\\n\\n  img,\\n  svg {\\n    max-inline-size: 100%;\\n  }\\n    \\n  input,\\n  button,\\n  textarea,\\n  select {\\n    font: inherit;\\n  }\\n}\\n\",\"js\":\"\",\"html_pre_processor\":\"none\",\"css_pre_processor\":\"none\",\"js_pre_processor\":\"none\",\"html_classes\":\"\",\"css_starter\":\"neither\",\"js_library\":null,\"created_at\":\"2024-02-24T19:25:05.025Z\",\"updated_at\":\"2024-02-24T22:16:40.380Z\",\"title\":\"Generated Contrast with Variables\",\"description\":\"\",\"slug_hash\":\"ZEPdPpv\",\"head\":\"\",\"private\":false,\"has_animation\":false,\"team_id\":0,\"css_prefix\":\"neither\",\"template\":false,\"parent_id\":0,\"comments_count\":0,\"custom_screenshot_filename\":null,\"loves_count\":2,\"pick\":false,\"popularity\":11,\"views_count\":13,\"pick_visible_at\":null,\"cpid\":\"018ddc94-0682-7aba-95aa-c209b75bff43\",\"is_new_editor_pen\":false,\"access\":\"Public\",\"pen_hash\":null}","__processorsMap":{"autoprefixer":"autoprefixer-10","babel":"babel-7","coffeescript":"coffeescript-2","format-1":"format-1","flutter":"flutter-1","haml":"haml-4","less":"less-3","lint-1":"lint-1","livescript":"livescript-1","markdown":"markdown-11","postcss":"postcss-7","pug":"pug-2","sass":"sass-1","scss":"sass-1","sass-ruby-3":"sass-ruby-3","sass-ruby-compass-3":"sass-ruby-compass-3","slim":"slim-3","stylus":"stylus-0","typescript":"typescript-4","vue":"vue-2","vue3":"vue-3"},"__favicon_mask_icon":"https://cpwebassets.codepen.io/assets/favicon/logo-pin-b4b4269c16397ad2f0f7a01bcdf513a1994f4c94b8af2f191c09eb0d601762b1.svg","__favicon_shortcut_icon":"https://cpwebassets.codepen.io/assets/favicon/favicon-aec34940fbc1a6e787974dcd360f2c6b63348d4b1f4e06c77743096d55480f33.ico","__path_to_iframe_console_runner":"https://cpwebassets.codepen.io/assets/editor/iframe/iframeConsoleRunner-6d8bf8b4b479137260842506acbb12717dace0823c023e08b96360e60b0840d9.js","__path_to_iframe_refresh_css":"https://cpwebassets.codepen.io/assets/editor/iframe/iframeRefreshCSS-44fe83e49b63affec96918c9af88c0d80b209a862cf87ac46bc933074b8c557d.js","__path_to_iframe_runtime_errors":"https://cpwebassets.codepen.io/assets/editor/iframe/iframeRuntimeErrors-4f205f2c14e769b448bcf477de2938c681660d5038bc464e3700256713ebe261.js","__path_to_processor_worker":"https://cpwebassets.codepen.io/assets/packs/router.js","__path_to_stop_execution_on_timeout":"https://cpwebassets.codepen.io/assets/common/stopExecutionOnTimeout-2c7831bb44f98c1391d6a4ffda0e1fd302503391ca806e7fcc7b9b87197aec26.js","__pen_normalize_css_url":"https://public.codepenassets.com/css/normalize-5.0.0.min.css","__pen_prefix_free_url":"https://public.codepenassets.com/js/prefixfree-1.0.7.min.js","__pen_reset_css_url":"https://public.codepenassets.com/css/reset-2.0.min.css"}