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HTML

              
                <table>
	<thead>
		<tr>
			<th>Convert</th>
			<th>Input 1</th>
			<th>Output</th>
			<th>Input 2</th>
			<th>Output</th>
		</tr>
	</thead>
	<tbody></tbody>
</table>
              
            
!

CSS

              
                *, *:before, *:after {
	border: 0;
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
body {
	color: #2e2e2e;
	font: calc(12px + (24 - 12) * (100vw - 320px)/(1920 - 320)) Hind, sans-serif;
	line-height: 1.5;
}
table {
	border-collapse: collapse;
	margin: auto;
}
th, td {
    border: 1px solid #999;
    padding: 0.375em 0.75em;
}
thead th {
	background: #171717;
	border: 1px solid #171717;
	color: #ddd;
}
td:nth-of-type(odd) {
	background: #ddd;
}

@media screen and (max-width: 880px) {
	table, thead, tbody, th, td, tr { 
		display: block; 
	}
	th, td {
		border: 0;
	}
	td {
		border-bottom: 1px solid #999;
	}
	thead tr { 
		position: absolute;
		top: -99px;
		left: -99px;
	}
	tbody th {
		text-align: left;
	}
	tbody th, td { 
		position: relative;
		padding-left: 50%; 
	}
	tbody th:before, td:before { 
		position: absolute;
		top: 0.375em;
		left: 0.75em;
		width: 45%; 
		padding-right: 0.75em; 
		white-space: nowrap;
	}
	tbody tr:not(:last-of-type) td:last-of-type {
		border-bottom: 1px solid #171717;
	}
	tbody th:before {
		content: "Convert";
	}
	td:nth-child(2):before {
		content: "Input 1";
	}
	td:nth-child(4):before {
		content: "Input 2";
	}
	td:nth-child(3):before,
	td:nth-child(5):before {
		content: "Output";
	}
}
              
            
!

JS

              
                /*--------- Try colors here ----------*/
var RGB = "rgb(0,0,255)",
	RGB_P = "rgb(0%,0%,100%)",
	RGBA = "rgba(0,0,255,0.5)",
	RGBA_P = "rgba(0%,0%,100%,0.5)",
	HEX = "#0000ff",
	HEXA = "#0000ff80",
	HSL = "hsl(240,100%,50%)",
	HSLA = "hsla(240,100%,50%,0.5)",
	NAME = "blue";

/*------------ Functions -------------*/
function RGBToHex(rgb) {
	let ex = /^rgb\((((((((1?[1-9]?\d)|10\d|(2[0-4]\d)|25[0-5]),\s?)){2}|((((1?[1-9]?\d)|10\d|(2[0-4]\d)|25[0-5])\s)){2})((1?[1-9]?\d)|10\d|(2[0-4]\d)|25[0-5]))|((((([1-9]?\d(\.\d+)?)|100|(\.\d+))%,\s?){2}|((([1-9]?\d(\.\d+)?)|100|(\.\d+))%\s){2})(([1-9]?\d(\.\d+)?)|100|(\.\d+))%))\)$/i;
	if (ex.test(rgb)) {
    	// choose correct separator
		let sep = rgb.indexOf(",") > -1 ? "," : " ";
    	// turn "rgb(r,g,b)" into [r,g,b]
		rgb = rgb.substr(4).split(")")[0].split(sep);

		// convert %s to 0–255
		for (let R in rgb) {
			let r = rgb[R];
			if (r.indexOf("%") > -1)
				rgb[R] = Math.round(r.substr(0,r.length - 1) / 100 * 255);
				/* Example:
				75% -> 191
				75/100 = 0.75, * 255 = 191.25 -> 191
				*/
		}

		let r = (+rgb[0]).toString(16),
			g = (+rgb[1]).toString(16),
			b = (+rgb[2]).toString(16);

		if (r.length == 1)
			r = "0" + r;
		if (g.length == 1)
			g = "0" + g;
		if (b.length == 1)
			b = "0" + b;
		
		return "#" + r + g + b;

	} else {
		return "Invalid input color";
	}
}

function RGBAToHexA(rgba) {
	let ex = /^rgba\((((((((1?[1-9]?\d)|10\d|(2[0-4]\d)|25[0-5]),\s?)){3})|(((([1-9]?\d(\.\d+)?)|100|(\.\d+))%,\s?){3}))|(((((1?[1-9]?\d)|10\d|(2[0-4]\d)|25[0-5])\s){3})|(((([1-9]?\d(\.\d+)?)|100|(\.\d+))%\s){3}))\/\s)((0?\.\d+)|[01]|(([1-9]?\d(\.\d+)?)|100|(\.\d+))%)\)$/i;
	if (ex.test(rgba)) {
		let sep = rgba.indexOf(",") > -1 ? "," : " ";
		rgba = rgba.substr(5).split(")")[0].split(sep);
		
		// strip the slash if using space-separated syntax
		if (rgba.indexOf("/") > -1)
			rgba.splice(3,1);

		for (let R in rgba) {
			let r = rgba[R];
			if (r.indexOf("%") > -1) {
				let p = r.substr(0,r.length - 1) / 100;

				if (R < 3) {
					rgba[R] = Math.round(p * 255);
				} else {
					rgba[R] = p;
				}
			}
		}

		let r = (+rgba[0]).toString(16),
			g = (+rgba[1]).toString(16),
			b = (+rgba[2]).toString(16),
			a = Math.round(+rgba[3] * 255).toString(16);
		
		if (r.length == 1)
			r = "0" + r;
		if (g.length == 1)
			g = "0" + g;
		if (b.length == 1)
			b = "0" + b;
		if (a.length == 1)
			a = "0" + a;
		
		return "#" + r + g + b + a;

	} else {
		return "Invalid input color";
	}
}

function hexToRGB(h,isPct) {
	let ex = /^#([\da-f]{3}){1,2}$/i;
	if (ex.test(h)) {
		let r = 0, g = 0, b = 0;
		isPct = isPct === true;

		// 3 digits
		if (h.length == 4) {
			r = "0x" + h[1] + h[1];
			g = "0x" + h[2] + h[2];
			b = "0x" + h[3] + h[3];

		// 6 digits
		} else if (h.length == 7) {
			r = "0x" + h[1] + h[2];
			g = "0x" + h[3] + h[4];
			b = "0x" + h[5] + h[6];
		}
		if (isPct) {
			r = +(r / 255 * 100).toFixed(1);
			g = +(g / 255 * 100).toFixed(1);
			b = +(b / 255 * 100).toFixed(1);
		}
		return "rgb("+ (isPct ? r + "%," + g + "%," + b + "%" : +r + "," + +g + "," + +b) + ")";
	
	} else {
		return "Invalid input color";
	}
}

function hexAToRGBA(h,isPct) {
	let ex = /^#([\da-f]{4}){1,2}$/i;
	if (ex.test(h)) {
		let r = 0, g = 0, b = 0, a = 1;
		isPct = isPct === true;

		if (h.length == 5) {
			r = "0x" + h[1] + h[1];
			g = "0x" + h[2] + h[2];
			b = "0x" + h[3] + h[3];
			a = "0x" + h[4] + h[4];

		} else if (h.length == 9) {
			r = "0x" + h[1] + h[2];
			g = "0x" + h[3] + h[4];
			b = "0x" + h[5] + h[6];
			a = "0x" + h[7] + h[8];
		}
		a = +(a / 255).toFixed(3);
		if (isPct) {
			r = +(r / 255 * 100).toFixed(1);
			g = +(g / 255 * 100).toFixed(1);
			b = +(b / 255 * 100).toFixed(1);
			a = +(a * 100).toFixed(1);
		}

		return "rgba("+ (isPct ? r + "%," + g + "%," + b + "%" + "," + a : +r + "," + +g + "," + +b + "," + a) + ")";

	} else {
		return "Invalid input color";
	}
}

function RGBToHSL(rgb) {
	let ex = /^rgb\((((((((1?[1-9]?\d)|10\d|(2[0-4]\d)|25[0-5]),\s?)){2}|((((1?[1-9]?\d)|10\d|(2[0-4]\d)|25[0-5])\s)){2})((1?[1-9]?\d)|10\d|(2[0-4]\d)|25[0-5]))|((((([1-9]?\d(\.\d+)?)|100|(\.\d+))%,\s?){2}|((([1-9]?\d(\.\d+)?)|100|(\.\d+))%\s){2})(([1-9]?\d(\.\d+)?)|100|(\.\d+))%))\)$/i;
	if (ex.test(rgb)) {
		let sep = rgb.indexOf(",") > -1 ? "," : " ";
		rgb = rgb.substr(4).split(")")[0].split(sep);
		
		// convert %s to 0–255
		for (let R in rgb) {
			let r = rgb[R];
			if (r.indexOf("%") > -1)
				rgb[R] = Math.round(r.substr(0,r.length - 1) / 100 * 255);
		}

		// make r, g, and b fractions of 1
		let r = rgb[0] / 255,
			g = rgb[1] / 255,
			b = rgb[2] / 255,

		// find greatest and smallest channel values
			cmin = Math.min(r,g,b),
			cmax = Math.max(r,g,b),
			delta = cmax - cmin,
			h = 0,
			s = 0,
			l = 0;

		// calculate hue
		// no difference
		if (delta == 0)
			h = 0;
		// red is max
		else if (cmax == r)
			h = ((g - b) / delta) % 6;
		// green is max
		else if (cmax == g)
			h = (b - r) / delta + 2;
		// blue is max
		else
			h = (r - g) / delta + 4;

		h = Math.round(h * 60);

		// make negative hues positive behind 360°
		if (h < 0)
			h += 360;

		// calculate lightness
		l = (cmax + cmin) / 2;

		// calculate saturation
		s = delta == 0 ? 0 : delta / (1 - Math.abs(2 * l - 1));

		// multiply l and s by 100
		s = +(s * 100).toFixed(1);
		l = +(l * 100).toFixed(1);
		
		return "hsl(" + h + "," + s + "%," + l + "%)";

	} else {
		return "Invalid input color";
	}
}

function RGBAToHSLA(rgba) {
	let ex = /^rgba\((((((((1?[1-9]?\d)|10\d|(2[0-4]\d)|25[0-5]),\s?)){3})|(((([1-9]?\d(\.\d+)?)|100|(\.\d+))%,\s?){3}))|(((((1?[1-9]?\d)|10\d|(2[0-4]\d)|25[0-5])\s){3})|(((([1-9]?\d(\.\d+)?)|100|(\.\d+))%\s){3}))\/\s)((0?\.\d+)|[01]|(([1-9]?\d(\.\d+)?)|100|(\.\d+))%)\)$/i;
	if (ex.test(rgba)) {
		let sep = rgba.indexOf(",") > -1 ? "," : " ";
		rgba = rgba.substr(5).split(")")[0].split(sep);
		
		// strip the slash if using space-separated syntax
		if (rgba.indexOf("/") > -1)
			rgba.splice(3,1);

		for (let R in rgba) {
			let r = rgba[R];
			if (r.indexOf("%") > -1) {
				let p = r.substr(0,r.length - 1) / 100;

				if (R < 3) {
					rgba[R] = Math.round(p * 255);
				}
			}
		}
		
		// make r, g, and b fractions of 1
		let r = rgba[0] / 255,
			g = rgba[1] / 255,
			b = rgba[2] / 255,
			a = rgba[3],
		
		// find greatest and smallest channel values
			cmin = Math.min(r,g,b),
			cmax = Math.max(r,g,b),
			delta = cmax - cmin,
			h = 0,
			s = 0,
			l = 0;

		// calculate hue
		// no difference
		if (delta == 0)
			h = 0;
		// red is max
		else if (cmax == r)
			h = ((g - b) / delta) % 6;
		// green is max
		else if (cmax == g)
			h = (b - r) / delta + 2;
		// blue is max
		else
			h = (r - g) / delta + 4;

		h = Math.round(h * 60);

		// make negative hues positive behind 360°
		if (h < 0)
			h += 360;
		
		// calculate lightness
		l = (cmax + cmin) / 2;

		// calculate saturation
		s = delta == 0 ? 0 : delta / (1 - Math.abs(2 * l - 1));

		// multiply l and s by 100
		s = +(s * 100).toFixed(1);
		l = +(l * 100).toFixed(1);
		
		return "hsla(" + h + "," + s + "%," + l + "%," + a + ")";

	} else {
		return "Invalid input color";
	}
}

function HSLToRGB(hsl,isPct) {
	let ex = /^hsl\(((((([12]?[1-9]?\d)|[12]0\d|(3[0-5]\d))(\.\d+)?)|(\.\d+))(deg)?|(0|0?\.\d+)turn|(([0-6](\.\d+)?)|(\.\d+))rad)((,\s?(([1-9]?\d(\.\d+)?)|100|(\.\d+))%){2}|(\s(([1-9]?\d(\.\d+)?)|100|(\.\d+))%){2})\)$/i;
	if (ex.test(hsl)) {
		let sep = hsl.indexOf(",") > -1 ? "," : " ";
		hsl = hsl.substr(4).split(")")[0].split(sep);
		isPct = isPct === true;

		let h = hsl[0],
			s = hsl[1].substr(0,hsl[1].length - 1) / 100,
			l = hsl[2].substr(0,hsl[2].length - 1) / 100;

		// strip label and convert to degrees (if necessary)
		if (h.indexOf("deg") > -1)
			h = h.substr(0,h.length - 3);
		else if (h.indexOf("rad") > -1)
			h = Math.round(h.substr(0,h.length - 3) / (2 * Math.PI) * 360);
		else if (h.indexOf("turn") > -1)
			h = Math.round(h.substr(0,h.length - 4) * 360);
		// keep hue fraction of 360 if ending up over
		if (h >= 360)
			h %= 360;
		
		let c = (1 - Math.abs(2 * l - 1)) * s,
			x = c * (1 - Math.abs((h / 60) % 2 - 1)),
			m = l - c/2,
			r = 0,
			g = 0,
			b = 0;
		
		if (0 <= h && h < 60) {
			r = c; g = x; b = 0;
		} else if (60 <= h && h < 120) {
			r = x; g = c; b = 0;
		} else if (120 <= h && h < 180) {
			r = 0; g = c; b = x;
		} else if (180 <= h && h < 240) {
			r = 0; g = x; b = c;
		} else if (240 <= h && h < 300) {
			r = x; g = 0; b = c;
		} else if (300 <= h && h < 360) {
			r = c; g = 0; b = x;
		}

		r = Math.round((r + m) * 255);
		g = Math.round((g + m) * 255);
		b = Math.round((b + m) * 255);

		if (isPct) {
			r = +(r / 255 * 100).toFixed(1);
			g = +(g / 255 * 100).toFixed(1);
			b = +(b / 255 * 100).toFixed(1);
		}

		return "rgb("+ (isPct ? r + "%," + g + "%," + b + "%" : +r + "," + +g + "," + +b) + ")";

	} else {
		return "Invalid input color";
	}
}

function HSLAToRGBA(hsla,isPct) {
	let ex = /^hsla\(((((([12]?[1-9]?\d)|[12]0\d|(3[0-5]\d))(\.\d+)?)|(\.\d+))(deg)?|(0|0?\.\d+)turn|(([0-6](\.\d+)?)|(\.\d+))rad)(((,\s?(([1-9]?\d(\.\d+)?)|100|(\.\d+))%){2},\s?)|((\s(([1-9]?\d(\.\d+)?)|100|(\.\d+))%){2}\s\/\s))((0?\.\d+)|[01]|(([1-9]?\d(\.\d+)?)|100|(\.\d+))%)\)$/i;
	if (ex.test(hsla)) {
		let sep = hsla.indexOf(",") > -1 ? "," : " ";
		hsla = hsla.substr(5).split(")")[0].split(sep);

		// strip the slash if using space-separated syntax
		if (hsla.indexOf("/") > -1)
			hsla.splice(3,1);

		isPct = isPct === true;

		// must be fractions of 1
		let h = hsla[0],
			s = hsla[1].substr(0,hsla[1].length-1) / 100,
			l = hsla[2].substr(0,hsla[2].length-1) / 100,
			a = hsla[3];
		
		// strip label and convert to degrees (if necessary)
		if (h.indexOf("deg") > -1)
			h = h.substr(0,h.length - 3);
		else if (h.indexOf("rad") > -1)
			h = Math.round(h.substr(0,h.length - 3) / (2 * Math.PI) * 360);
		else if (h.indexOf("turn") > -1)
			h = Math.round(h.substr(0,h.length - 4) * 360);
		if (h >= 360)
			h %= 360;

		let c = (1 - Math.abs(2 * l - 1)) * s,
			x = c * (1 - Math.abs((h / 60) % 2 - 1)),
			m = l - c/2,
			r = 0,
			g = 0,
			b = 0;
		
		if (0 <= h && h < 60) {
			r = c; g = x; b = 0;
		} else if (60 <= h && h < 120) {
			r = x; g = c; b = 0;
		} else if (120 <= h && h < 180) {
			r = 0; g = c; b = x;
		} else if (180 <= h && h < 240) {
			r = 0; g = x; b = c;
		} else if (240 <= h && h < 300) {
			r = x; g = 0; b = c;
		} else if (300 <= h && h < 360) {
			r = c; g = 0; b = x;
		}

		r = Math.round((r + m) * 255);
		g = Math.round((g + m) * 255);
		b = Math.round((b + m) * 255);

		let pctFound = a.indexOf("%") > -1;

		if (isPct) {
			r = +(r / 255 * 100).toFixed(1);
			g = +(g / 255 * 100).toFixed(1);
			b = +(b / 255 * 100).toFixed(1);
			if (!pctFound) {
				a *= 100;
			} else {
				a = a.substr(0,a.length - 1);
			}

		} else if (pctFound) {
			a = a.substr(0,a.length - 1) / 100;
		}
		
		return "rgba("+ (isPct ? r + "%," + g + "%," + b + "%," + a + "%" : +r + ","+ +g + "," + +b + "," + +a) + ")";

	} else {
		return "Invalid input color";
	}
}

function hexToHSL(H) {
	let ex = /^#([\da-f]{3}){1,2}$/i;
	if (ex.test(H)) {
		// convert hex to RGB first
		let r = 0, g = 0, b = 0;
		if (H.length == 4) {
			r = "0x" + H[1] + H[1];
			g = "0x" + H[2] + H[2];
			b = "0x" + H[3] + H[3];
		} else if (H.length == 7) {
			r = "0x" + H[1] + H[2];
			g = "0x" + H[3] + H[4];
			b = "0x" + H[5] + H[6];
		}
		// then to HSL
		r /= 255;
		g /= 255;
		b /= 255;
		let cmin = Math.min(r,g,b),
			cmax = Math.max(r,g,b),
			delta = cmax - cmin,
			h = 0,
			s = 0,
			l = 0;

		if (delta == 0)
			h = 0;
		else if (cmax == r)
			h = ((g - b) / delta) % 6;
		else if (cmax == g)
			h = (b - r) / delta + 2;
		else
			h = (r - g) / delta + 4;

		h = Math.round(h * 60);

		if (h < 0)
			h += 360;

		l = (cmax + cmin) / 2;
		s = delta == 0 ? 0 : delta / (1 - Math.abs(2 * l - 1));
		s = +(s * 100).toFixed(1);
		l = +(l * 100).toFixed(1);
		
		return "hsl(" + h + "," + s + "%," + l + "%)";

	} else {
		return "Invalid input color";
	}
}

function hexAToHSLA(H) {
	let ex = /^#([\da-f]{4}){1,2}$/i;
	if (ex.test(H)) {
		let r = 0, g = 0, b = 0, a = 1;
		// 4 digits
		if (H.length == 5) {
			r = "0x" + H[1] + H[1];
			g = "0x" + H[2] + H[2];
			b = "0x" + H[3] + H[3];
			a = "0x" + H[4] + H[4];
		// 8 digits
		} else if (H.length == 9) {
			r = "0x" + H[1] + H[2];
			g = "0x" + H[3] + H[4];
			b = "0x" + H[5] + H[6];
			a = "0x" + H[7] + H[8];
		}
		
		// normal conversion to HSLA
		r /= 255;
		g /= 255;
		b /= 255;
		let cmin = Math.min(r,g,b),
			cmax = Math.max(r,g,b),
			delta = cmax - cmin,
			h = 0,
			s = 0,
			l = 0;

		if (delta == 0)
			h = 0;
		else if (cmax == r)
			h = ((g - b) / delta) % 6;
		else if (cmax == g)
			h = (b - r) / delta + 2;
		else
			h = (r - g) / delta + 4;

		h = Math.round(h * 60);

		if (h < 0)
			h += 360;

		l = (cmax + cmin) / 2;
		s = delta == 0 ? 0 : delta / (1 - Math.abs(2 * l - 1));
		s = +(s * 100).toFixed(1);
		l = +(l * 100).toFixed(1);
		
		a = (a / 255).toFixed(3);
		
		return "hsla("+ h + "," + s + "%," + l + "%," + a + ")";

	} else {
		return "Invalid input color";
	}
}

function HSLToHex(hsl) {
	let ex = /^hsl\(((((([12]?[1-9]?\d)|[12]0\d|(3[0-5]\d))(\.\d+)?)|(\.\d+))(deg)?|(0|0?\.\d+)turn|(([0-6](\.\d+)?)|(\.\d+))rad)((,\s?(([1-9]?\d(\.\d+)?)|100|(\.\d+))%){2}|(\s(([1-9]?\d(\.\d+)?)|100|(\.\d+))%){2})\)$/i;
	if (ex.test(hsl)) {
		let sep = hsl.indexOf(",") > -1 ? "," : " ";
		hsl = hsl.substr(4).split(")")[0].split(sep);

		let h = hsl[0],
			s = hsl[1].substr(0,hsl[1].length - 1) / 100,
			l = hsl[2].substr(0,hsl[2].length - 1) / 100;
	
		// strip label and convert to degrees (if necessary)
		if (h.indexOf("deg") > -1)
			h = h.substr(0,h.length - 3);
		else if (h.indexOf("rad") > -1)
			h = Math.round(h.substr(0,h.length - 3) * (180 / Math.PI));
		else if (h.indexOf("turn") > -1)
			h = Math.round(h.substr(0,h.length - 4) * 360);
		if (h >= 360)
			h %= 360;
		
		let c = (1 - Math.abs(2 * l - 1)) * s,
			x = c * (1 - Math.abs((h / 60) % 2 - 1)),
			m = l - c/2,
			r = 0,
			g = 0,
			b = 0;
		
		if (0 <= h && h < 60) {
			r = c; g = x; b = 0;
		} else if (60 <= h && h < 120) {
			r = x; g = c; b = 0;
		} else if (120 <= h && h < 180) {
			r = 0; g = c; b = x;
		} else if (180 <= h && h < 240) {
			r = 0; g = x; b = c;
		} else if (240 <= h && h < 300) {
			r = x; g = 0; b = c;
		} else if (300 <= h && h < 360) {
			r = c; g = 0; b = x;
		}
		// having obtained RGB, convert channels to hex
		r = Math.round((r + m) * 255).toString(16);
		g = Math.round((g + m) * 255).toString(16);
		b = Math.round((b + m) * 255).toString(16);
		
		// prepend 0s if necessary
		if (r.length == 1)
			r = "0" + r;
		if (g.length == 1)
			g = "0" + g;
		if (b.length == 1)
			b = "0" + b;
		
		return "#" + r + g + b;

	} else {
		return "Invalid input color";
	}
}

function HSLAToHexA(hsla) {
	let ex = /^hsla\(((((([12]?[1-9]?\d)|[12]0\d|(3[0-5]\d))(\.\d+)?)|(\.\d+))(deg)?|(0|0?\.\d+)turn|(([0-6](\.\d+)?)|(\.\d+))rad)(((,\s?(([1-9]?\d(\.\d+)?)|100|(\.\d+))%){2},\s?)|((\s(([1-9]?\d(\.\d+)?)|100|(\.\d+))%){2}\s\/\s))((0?\.\d+)|[01]|(([1-9]?\d(\.\d+)?)|100|(\.\d+))%)\)$/i;
	if (ex.test(hsla)) {
		let sep = hsla.indexOf(",") > -1 ? "," : " ";
		hsla = hsla.substr(5).split(")")[0].split(sep);
		
		// strip the slash
		if (hsla.indexOf("/") > -1)
			hsla.splice(3,1);

		let h = hsla[0],
			s = hsla[1].substr(0,hsla[1].length - 1) / 100,
			l = hsla[2].substr(0,hsla[2].length - 1) / 100,
			a = hsla[3];
		
		// strip label and convert to degrees (if necessary)
		if (h.indexOf("deg") > -1)
			h = h.substr(0,h.length - 3);
		else if (h.indexOf("rad") > -1)
			h = Math.round(h.substr(0,h.length - 3) * (180 / Math.PI));
		else if (h.indexOf("turn") > -1)
			h = Math.round(h.substr(0,h.length - 4) * 360);
		if (h >= 360)
			h %= 360;

		// strip % from alpha, make fraction of 1 (if necessary)
		if (a.indexOf("%") > -1)
			a = a.substr(0,a.length - 1) / 100;
	
		let c = (1 - Math.abs(2 * l - 1)) * s,
			x = c * (1 - Math.abs((h / 60) % 2 - 1)),
			m = l - c/2,
			r = 0,
			g = 0,
			b = 0;
		
		if (0 <= h && h < 60) {
			r = c; g = x; b = 0;
		} else if (60 <= h && h < 120) {
			r = x; g = c; b = 0;
		} else if (120 <= h && h < 180) {
			r = 0; g = c; b = x;
		} else if (180 <= h && h < 240) {
			r = 0; g = x; b = c;
		} else if (240 <= h && h < 300) {
			r = x; g = 0; b = c;
		} else if (300 <= h && h < 360) {
			r = c; g = 0; b = x;
		}
		r = Math.round((r + m) * 255).toString(16);
		g = Math.round((g + m) * 255).toString(16);
		b = Math.round((b + m) * 255).toString(16);
		a = Math.round(a * 255).toString(16);
		
		if (r.length == 1)
			r = "0" + r;
		if (g.length == 1)
			g = "0" + g;
		if (b.length == 1)
			b = "0" + b;
		if (a.length == 1)
			a = "0" + a;
		
		return "#" + r + g + b + a;
	} else {
		return "Invalid input color";
	}
}

function nameToRGB(name) {
	// create fake div
	let fakeDiv = document.createElement("div");
	fakeDiv.style.color = name;
	document.body.appendChild(fakeDiv);

	// get color of div
	let cs = window.getComputedStyle(fakeDiv),
		pv = cs.getPropertyValue("color");

	// remove div after obtaining desired color value
	document.body.removeChild(fakeDiv);

	return pv;
}

function nameToHex(name) {
	// get RGB from named color in div
	let fakeDiv = document.createElement("div");
	fakeDiv.style.color = name;
	document.body.appendChild(fakeDiv);

	let cs = window.getComputedStyle(fakeDiv),
		pv = cs.getPropertyValue("color");

	document.body.removeChild(fakeDiv);

	// code ripped from RGBToHex() (except pv is substringed)
	let rgb = pv.substr(4).split(")")[0].split(","),
		r = (+rgb[0]).toString(16),
		g = (+rgb[1]).toString(16),
		b = (+rgb[2]).toString(16);

	if (r.length == 1)
		r = "0" + r;
	if (g.length == 1)
		g = "0" + g;
	if (b.length == 1)
		b = "0" + b;
	
	return "#" + r + g + b;
}

function nameToHSL(name) {
	let fakeDiv = document.createElement("div");
	fakeDiv.style.color = name;
	document.body.appendChild(fakeDiv);

	let cs = window.getComputedStyle(fakeDiv),
		pv = cs.getPropertyValue("color");

	document.body.removeChild(fakeDiv);

	// code ripped from RGBToHSL() (except pv is substringed)
	let rgb = pv.substr(4).split(")")[0].split(","),
		r = rgb[0] / 255,
		g = rgb[1] / 255,
		b = rgb[2] / 255,
		cmin = Math.min(r,g,b),
		cmax = Math.max(r,g,b),
		delta = cmax - cmin,
		h = 0,
		s = 0,
		l = 0;

	if (delta == 0)
		h = 0;
	else if (cmax == r)
		h = ((g - b) / delta) % 6;
	else if (cmax == g)
		h = (b - r) / delta + 2;
	else
		h = (r - g) / delta + 4;

	h = Math.round(h * 60);

	if (h < 0)
		h += 360;

	l = (cmax + cmin) / 2;
	s = delta == 0 ? 0 : delta / (1 - Math.abs(2 * l - 1));
	s = +(s * 100).toFixed(1);
	l = +(l * 100).toFixed(1);
	
	return "hsl(" + h + "," + s + "%," + l + "%)";
}

/*-------- Table Generation ----------*/
var arr = "\u2192",
	fns = [
		["RGB "+arr+" Hex", RGB, RGBToHex(RGB), RGB_P, RGBToHex(RGB_P)],
		["RGBA "+arr+" HexA", RGBA, RGBAToHexA(RGBA), RGBA_P, RGBAToHexA(RGBA_P)],
		["Hex "+arr+" RGB", HEX, hexToRGB(HEX), HEX, hexToRGB(HEX,true)],
		["HexA "+arr+" RGBA", HEXA, hexAToRGBA(HEXA), HEXA, hexAToRGBA(HEXA,true)],
		["RGB "+arr+" HSL", RGB, RGBToHSL(RGB), RGB_P, RGBToHSL(RGB_P)],
		["RGBA "+arr+" HSLA", RGBA, RGBAToHSLA(RGBA), RGBA_P, RGBAToHSLA(RGBA_P)],
		["HSL "+arr+" RGB", HSL, HSLToRGB(HSL), HSL, HSLToRGB(HSL,true)],
		["HSLA "+arr+" RGBA", HSLA, HSLAToRGBA(HSLA), HSLA, HSLAToRGBA(HSLA,true)],
		["Hex "+arr+" HSL", HEX, hexToHSL(HEX), "N/A", "N/A"],
		["HexA "+arr+" HSLA", HEXA, hexAToHSLA(HEXA), "N/A", "N/A"],
		["HSL "+arr+" Hex", HSL, HSLToHex(HSL), "N/A", "N/A"],
		["HSLA "+arr+" HexA", HSLA, HSLAToHexA(HSLA), "N/A", "N/A"],
		["Name "+arr+" RGB", NAME, nameToRGB(NAME), "N/A", "N/A"],
		["Name "+arr+" Hex", NAME, nameToHex(NAME), "N/A", "N/A"],
		["Name "+arr+" HSL", NAME, nameToHSL(NAME), "N/A", "N/A"]
	];
// table cells
fns.forEach(function(el){
	let tb = document.querySelector("tbody"),
		tr = document.createElement("tr");
	
	for (let e in el) {
		let c = document.createElement(+e?"td":"th"),
			cTxt = document.createTextNode(el[e]);
		c.appendChild(cTxt);
		tr.appendChild(c);
	}
	tb.appendChild(tr);
});
              
            
!
999px

Console