Convert RGB to ColorName String Javascript

/* w3color.js ver.1.18 by w3schools.com (Do not remove this line)*/ (function () { function w3color(color, elmnt) { if (!(this instanceof w3color)) { return new w3color(color, elmnt); } if (typeof color == "object") {return color; } this.attachValues(toColorObject(color)); if (elmnt) {elmnt.style.backgroundColor = this.toRgbString();} } w3color.prototype = { toRgbString : function () { return "rgb(" + this.red + ", " + this.green + ", " + this.blue + ")"; }, toRgbaString : function () { return "rgba(" + this.red + ", " + this.green + ", " + this.blue + ", " + this.opacity + ")"; }, toHwbString : function () { return "hwb(" + this.hue + ", " + Math.round(this.whiteness * 100) + "%, " + Math.round(this.blackness * 100) + "%)"; }, toHwbStringDecimal : function () { return "hwb(" + this.hue + ", " + this.whiteness + ", " + this.blackness + ")"; }, toHwbaString : function () { return "hwba(" + this.hue + ", " + Math.round(this.whiteness * 100) + "%, " + Math.round(this.blackness * 100) + "%, " + this.opacity + ")"; }, toHslString : function () { return "hsl(" + this.hue + ", " + Math.round(this.sat * 100) + "%, " + Math.round(this.lightness * 100) + "%)"; }, toHslStringDecimal : function () { return "hsl(" + this.hue + ", " + this.sat + ", " + this.lightness + ")"; }, toHslaString : function () { return "hsla(" + this.hue + ", " + Math.round(this.sat * 100) + "%, " + Math.round(this.lightness * 100) + "%, " + this.opacity + ")"; }, toCmykString : function () { return "cmyk(" + Math.round(this.cyan * 100) + "%, " + Math.round(this.magenta * 100) + "%, " + Math.round(this.yellow * 100) + "%, " + Math.round(this.black * 100) + "%)"; }, toCmykStringDecimal : function () { return "cmyk(" + this.cyan + ", " + this.magenta + ", " + this.yellow + ", " + this.black + ")"; }, toNcolString : function () { return this.ncol + ", " + Math.round(this.whiteness * 100) + "%, " + Math.round(this.blackness * 100) + "%"; }, toNcolStringDecimal : function () { return this.ncol + ", " + this.whiteness + ", " + this.blackness; }, toNcolaString : function () { return this.ncol + ", " + Math.round(this.whiteness * 100) + "%, " + Math.round(this.blackness * 100) + "%, " + this.opacity; }, toName : function () { var r, g, b, colorhexs = getColorArr('hexs'); for (i = 0; i < colorhexs.length; i++) { r = parseInt(colorhexs[i].substr(0,2), 16); g = parseInt(colorhexs[i].substr(2,2), 16); b = parseInt(colorhexs[i].substr(4,2), 16); if (this.red == r && this.green == g && this.blue == b) { return getColorArr('names')[i]; } } return ""; }, toHexString : function () { var r = toHex(this.red); var g = toHex(this.green); var b = toHex(this.blue); return "#" + r + g + b; }, toRgb : function () { return {r : this.red, g : this.green, b : this.blue, a : this.opacity}; }, toHsl : function () { return {h : this.hue, s : this.sat, l : this.lightness, a : this.opacity}; }, toHwb : function () { return {h : this.hue, w : this.whiteness, b : this.blackness, a : this.opacity}; }, toCmyk : function () { return {c : this.cyan, m : this.magenta, y : this.yellow, k : this.black, a : this.opacity}; }, toNcol : function () { return {ncol : this.ncol, w : this.whiteness, b : this.blackness, a : this.opacity}; }, isDark : function (n) { var m = (n || 128); return (((this.red * 299 + this.green * 587 + this.blue * 114) / 1000) < m); }, saturate : function (n) { var x, rgb, color; x = (n / 100 || 0.1); this.sat += x; if (this.sat > 1) {this.sat = 1;} rgb = hslToRgb(this.hue, this.sat, this.lightness); color = colorObject(rgb, this.opacity, this.hue, this.sat); this.attachValues(color); }, desaturate : function (n) { var x, rgb, color; x = (n / 100 || 0.1); this.sat -= x; if (this.sat < 0) {this.sat = 0;} rgb = hslToRgb(this.hue, this.sat, this.lightness); color = colorObject(rgb, this.opacity, this.hue, this.sat); this.attachValues(color); }, lighter : function (n) { var x, rgb, color; x = (n / 100 || 0.1); this.lightness += x; if (this.lightness > 1) {this.lightness = 1;} rgb = hslToRgb(this.hue, this.sat, this.lightness); color = colorObject(rgb, this.opacity, this.hue, this.sat); this.attachValues(color); }, darker : function (n) { var x, rgb, color; x = (n / 100 || 0.1); this.lightness -= x; if (this.lightness < 0) {this.lightness = 0;} rgb = hslToRgb(this.hue, this.sat, this.lightness); color = colorObject(rgb, this.opacity, this.hue, this.sat); this.attachValues(color); }, attachValues : function(color) { this.red = color.red; this.green = color.green; this.blue = color.blue; this.hue = color.hue; this.sat = color.sat; this.lightness = color.lightness; this.whiteness = color.whiteness; this.blackness = color.blackness; this.cyan = color.cyan; this.magenta = color.magenta; this.yellow = color.yellow; this.black = color.black; this.ncol = color.ncol; this.opacity = color.opacity; this.valid = color.valid; } }; function toColorObject(c) { var x, y, typ, arr = [], arrlength, i, opacity, match, a, hue, sat, rgb, colornames = [], colorhexs = []; c = w3trim(c.toLowerCase()); x = c.substr(0,1).toUpperCase(); y = c.substr(1); a = 1; if ((x == "R" || x == "Y" || x == "G" || x == "C" || x == "B" || x == "M" || x == "W") && !isNaN(y)) { if (c.length == 6 && c.indexOf(",") == -1) { } else { c = "ncol(" + c + ")"; } } if (c.length != 3 && c.length != 6 && !isNaN(c)) {c = "ncol(" + c + ")";} if (c.indexOf(",") > 0 && c.indexOf("(") == -1) {c = "ncol(" + c + ")";} if (c.substr(0, 3) == "rgb" || c.substr(0, 3) == "hsl" || c.substr(0, 3) == "hwb" || c.substr(0, 4) == "ncol" || c.substr(0, 4) == "cmyk") { if (c.substr(0, 4) == "ncol") { if (c.split(",").length == 4 && c.indexOf("ncola") == -1) { c = c.replace("ncol", "ncola"); } typ = "ncol"; c = c.substr(4); } else if (c.substr(0, 4) == "cmyk") { typ = "cmyk"; c = c.substr(4); } else { typ = c.substr(0, 3); c = c.substr(3); } arrlength = 3; opacity = false; if (c.substr(0, 1).toLowerCase() == "a") { arrlength = 4; opacity = true; c = c.substr(1); } else if (typ == "cmyk") { arrlength = 4; if (c.split(",").length == 5) { arrlength = 5; opacity = true; } } c = c.replace("(", ""); c = c.replace(")", ""); arr = c.split(","); if (typ == "rgb") { if (arr.length != arrlength) { return emptyObject(); } for (i = 0; i < arrlength; i++) { if (arr[i] == "" || arr[i] == " ") {arr[i] = "0"; } if (arr[i].indexOf("%") > -1) { arr[i] = arr[i].replace("%", ""); arr[i] = Number(arr[i] / 100); if (i < 3 ) {arr[i] = Math.round(arr[i] * 255);} } if (isNaN(arr[i])) {return emptyObject(); } if (parseInt(arr[i]) > 255) {arr[i] = 255; } if (i < 3) {arr[i] = parseInt(arr[i]);} if (i == 3 && Number(arr[i]) > 1) {arr[i] = 1;} } rgb = {r : arr[0], g : arr[1], b : arr[2]}; if (opacity == true) {a = Number(arr[3]);} } if (typ == "hsl" || typ == "hwb" || typ == "ncol") { while (arr.length < arrlength) {arr.push("0"); } if (typ == "hsl" || typ == "hwb") { if (parseInt(arr[0]) >= 360) {arr[0] = 0; } } for (i = 1; i < arrlength; i++) { if (arr[i].indexOf("%") > -1) { arr[i] = arr[i].replace("%", ""); arr[i] = Number(arr[i]); if (isNaN(arr[i])) {return emptyObject(); } arr[i] = arr[i] / 100; } else { arr[i] = Number(arr[i]); } if (Number(arr[i]) > 1) {arr[i] = 1;} if (Number(arr[i]) < 0) {arr[i] = 0;} } if (typ == "hsl") {rgb = hslToRgb(arr[0], arr[1], arr[2]); hue = Number(arr[0]); sat = Number(arr[1]);} if (typ == "hwb") {rgb = hwbToRgb(arr[0], arr[1], arr[2]);} if (typ == "ncol") {rgb = ncolToRgb(arr[0], arr[1], arr[2]);} if (opacity == true) {a = Number(arr[3]);} } if (typ == "cmyk") { while (arr.length < arrlength) {arr.push("0"); } for (i = 0; i < arrlength; i++) { if (arr[i].indexOf("%") > -1) { arr[i] = arr[i].replace("%", ""); arr[i] = Number(arr[i]); if (isNaN(arr[i])) {return emptyObject(); } arr[i] = arr[i] / 100; } else { arr[i] = Number(arr[i]); } if (Number(arr[i]) > 1) {arr[i] = 1;} if (Number(arr[i]) < 0) {arr[i] = 0;} } rgb = cmykToRgb(arr[0], arr[1], arr[2], arr[3]); if (opacity == true) {a = Number(arr[4]);} } } else if (c.substr(0, 3) == "ncs") { rgb = ncsToRgb(c); } else { match = false; colornames = getColorArr('names'); for (i = 0; i < colornames.length; i++) { if (c.toLowerCase() == colornames[i].toLowerCase()) { colorhexs = getColorArr('hexs'); match = true; rgb = { r : parseInt(colorhexs[i].substr(0,2), 16), g : parseInt(colorhexs[i].substr(2,2), 16), b : parseInt(colorhexs[i].substr(4,2), 16) }; break; } } if (match == false) { c = c.replace("#", ""); if (c.length == 3) {c = c.substr(0,1) + c.substr(0,1) + c.substr(1,1) + c.substr(1,1) + c.substr(2,1) + c.substr(2,1);} for (i = 0; i < c.length; i++) { if (!isHex(c.substr(i, 1))) {return emptyObject(); } } arr[0] = parseInt(c.substr(0,2), 16); arr[1] = parseInt(c.substr(2,2), 16); arr[2] = parseInt(c.substr(4,2), 16); for (i = 0; i < 3; i++) { if (isNaN(arr[i])) {return emptyObject(); } } rgb = { r : arr[0], g : arr[1], b : arr[2] }; } } return colorObject(rgb, a, hue, sat); } function colorObject(rgb, a, h, s) { var hsl, hwb, cmyk, ncol, color, hue, sat; if (!rgb) {return emptyObject();} if (a === null) {a = 1;} hsl = rgbToHsl(rgb.r, rgb.g, rgb.b); hwb = rgbToHwb(rgb.r, rgb.g, rgb.b); cmyk = rgbToCmyk(rgb.r, rgb.g, rgb.b); hue = (h || hsl.h); sat = (s || hsl.s); ncol = hueToNcol(hue); color = { red : rgb.r, green : rgb.g, blue : rgb.b, hue : hue, sat : sat, lightness : hsl.l, whiteness : hwb.w, blackness : hwb.b, cyan : cmyk.c, magenta : cmyk.m, yellow : cmyk.y, black : cmyk.k, ncol : ncol, opacity : a, valid : true }; color = roundDecimals(color); return color; } function emptyObject() { return { red : 0, green : 0, blue : 0, hue : 0, sat : 0, lightness : 0, whiteness : 0, blackness : 0, cyan : 0, magenta : 0, yellow : 0, black : 0, ncol : "R", opacity : 1, valid : false }; } function getColorArr(x) { if (x == "names") {return ['AliceBlue','AntiqueWhite','Aqua','Aquamarine','Azure','Beige','Bisque','Black','BlanchedAlmond','Blue','BlueViolet','Brown','BurlyWood','CadetBlue','Chartreuse','Chocolate','Coral','CornflowerBlue','Cornsilk','Crimson','Cyan','DarkBlue','DarkCyan','DarkGoldenRod','DarkGray','DarkGrey','DarkGreen','DarkKhaki','DarkMagenta','DarkOliveGreen','DarkOrange','DarkOrchid','DarkRed','DarkSalmon','DarkSeaGreen','DarkSlateBlue','DarkSlateGray','DarkSlateGrey','DarkTurquoise','DarkViolet','DeepPink','DeepSkyBlue','DimGray','DimGrey','DodgerBlue','FireBrick','FloralWhite','ForestGreen','Fuchsia','Gainsboro','GhostWhite','Gold','GoldenRod','Gray','Grey','Green','GreenYellow','HoneyDew','HotPink','IndianRed','Indigo','Ivory','Khaki','Lavender','LavenderBlush','LawnGreen','LemonChiffon','LightBlue','LightCoral','LightCyan','LightGoldenRodYellow','LightGray','LightGrey','LightGreen','LightPink','LightSalmon','LightSeaGreen','LightSkyBlue','LightSlateGray','LightSlateGrey','LightSteelBlue','LightYellow','Lime','LimeGreen','Linen','Magenta','Maroon','MediumAquaMarine','MediumBlue','MediumOrchid','MediumPurple','MediumSeaGreen','MediumSlateBlue','MediumSpringGreen','MediumTurquoise','MediumVioletRed','MidnightBlue','MintCream','MistyRose','Moccasin','NavajoWhite','Navy','OldLace','Olive','OliveDrab','Orange','OrangeRed','Orchid','PaleGoldenRod','PaleGreen','PaleTurquoise','PaleVioletRed','PapayaWhip','PeachPuff','Peru','Pink','Plum','PowderBlue','Purple','RebeccaPurple','Red','RosyBrown','RoyalBlue','SaddleBrown','Salmon','SandyBrown','SeaGreen','SeaShell','Sienna','Silver','SkyBlue','SlateBlue','SlateGray','SlateGrey','Snow','SpringGreen','SteelBlue','Tan','Teal','Thistle','Tomato','Turquoise','Violet','Wheat','White','WhiteSmoke','Yellow','YellowGreen']; } if (x == "hexs") {return ['f0f8ff','faebd7','00ffff','7fffd4','f0ffff','f5f5dc','ffe4c4','000000','ffebcd','0000ff','8a2be2','a52a2a','deb887','5f9ea0','7fff00','d2691e','ff7f50','6495ed','fff8dc','dc143c','00ffff','00008b','008b8b','b8860b','a9a9a9','a9a9a9','006400','bdb76b','8b008b','556b2f','ff8c00','9932cc','8b0000','e9967a','8fbc8f','483d8b','2f4f4f','2f4f4f','00ced1','9400d3','ff1493','00bfff','696969','696969','1e90ff','b22222','fffaf0','228b22','ff00ff','dcdcdc','f8f8ff','ffd700','daa520','808080','808080','008000','adff2f','f0fff0','ff69b4','cd5c5c','4b0082','fffff0','f0e68c','e6e6fa','fff0f5','7cfc00','fffacd','add8e6','f08080','e0ffff','fafad2','d3d3d3','d3d3d3','90ee90','ffb6c1','ffa07a','20b2aa','87cefa','778899','778899','b0c4de','ffffe0','00ff00','32cd32','faf0e6','ff00ff','800000','66cdaa','0000cd','ba55d3','9370db','3cb371','7b68ee','00fa9a','48d1cc','c71585','191970','f5fffa','ffe4e1','ffe4b5','ffdead','000080','fdf5e6','808000','6b8e23','ffa500','ff4500','da70d6','eee8aa','98fb98','afeeee','db7093','ffefd5','ffdab9','cd853f','ffc0cb','dda0dd','b0e0e6','800080','663399','ff0000','bc8f8f','4169e1','8b4513','fa8072','f4a460','2e8b57','fff5ee','a0522d','c0c0c0','87ceeb','6a5acd','708090','708090','fffafa','00ff7f','4682b4','d2b48c','008080','d8bfd8','ff6347','40e0d0','ee82ee','f5deb3','ffffff','f5f5f5','ffff00','9acd32']; } } function roundDecimals(c) { c.red = Number(c.red.toFixed(0)); c.green = Number(c.green.toFixed(0)); c.blue = Number(c.blue.toFixed(0)); c.hue = Number(c.hue.toFixed(0)); c.sat = Number(c.sat.toFixed(2)); c.lightness = Number(c.lightness.toFixed(2)); c.whiteness = Number(c.whiteness.toFixed(2)); c.blackness = Number(c.blackness.toFixed(2)); c.cyan = Number(c.cyan.toFixed(2)); c.magenta = Number(c.magenta.toFixed(2)); c.yellow = Number(c.yellow.toFixed(2)); c.black = Number(c.black.toFixed(2)); c.ncol = c.ncol.substr(0, 1) + Math.round(Number(c.ncol.substr(1))); c.opacity = Number(c.opacity.toFixed(2)); return c; } function hslToRgb(hue, sat, light) { var t1, t2, r, g, b; hue = hue / 60; if ( light <= 0.5 ) { t2 = light * (sat + 1); } else { t2 = light + sat - (light * sat); } t1 = light * 2 - t2; r = hueToRgb(t1, t2, hue + 2) * 255; g = hueToRgb(t1, t2, hue) * 255; b = hueToRgb(t1, t2, hue - 2) * 255; return {r : r, g : g, b : b}; } function hueToRgb(t1, t2, hue) { if (hue < 0) hue += 6; if (hue >= 6) hue -= 6; if (hue < 1) return (t2 - t1) * hue + t1; else if(hue < 3) return t2; else if(hue < 4) return (t2 - t1) * (4 - hue) + t1; else return t1; } function hwbToRgb(hue, white, black) { var i, rgb, rgbArr = [], tot; rgb = hslToRgb(hue, 1, 0.50); rgbArr[0] = rgb.r / 255; rgbArr[1] = rgb.g / 255; rgbArr[2] = rgb.b / 255; tot = white + black; if (tot > 1) { white = Number((white / tot).toFixed(2)); black = Number((black / tot).toFixed(2)); } for (i = 0; i < 3; i++) { rgbArr[i] *= (1 - (white) - (black)); rgbArr[i] += (white); rgbArr[i] = Number(rgbArr[i] * 255); } return {r : rgbArr[0], g : rgbArr[1], b : rgbArr[2] }; } function cmykToRgb(c, m, y, k) { var r, g, b; r = 255 - ((Math.min(1, c * (1 - k) + k)) * 255); g = 255 - ((Math.min(1, m * (1 - k) + k)) * 255); b = 255 - ((Math.min(1, y * (1 - k) + k)) * 255); return {r : r, g : g, b : b}; } function ncolToRgb(ncol, white, black) { var letter, percent, h, w, b; h = ncol; if (isNaN(ncol.substr(0,1))) { letter = ncol.substr(0,1).toUpperCase(); percent = ncol.substr(1); if (percent == "") {percent = 0;} percent = Number(percent); if (isNaN(percent)) {return false;} if (letter == "R") {h = 0 + (percent * 0.6);} if (letter == "Y") {h = 60 + (percent * 0.6);} if (letter == "G") {h = 120 + (percent * 0.6);} if (letter == "C") {h = 180 + (percent * 0.6);} if (letter == "B") {h = 240 + (percent * 0.6);} if (letter == "M") {h = 300 + (percent * 0.6);} if (letter == "W") { h = 0; white = 1 - (percent / 100); black = (percent / 100); } } return hwbToRgb(h, white, black); } function hueToNcol(hue) { while (hue >= 360) { hue = hue - 360; } if (hue < 60) {return "R" + (hue / 0.6); } if (hue < 120) {return "Y" + ((hue - 60) / 0.6); } if (hue < 180) {return "G" + ((hue - 120) / 0.6); } if (hue < 240) {return "C" + ((hue - 180) / 0.6); } if (hue < 300) {return "B" + ((hue - 240) / 0.6); } if (hue < 360) {return "M" + ((hue - 300) / 0.6); } } function ncsToRgb(ncs){ var black, chroma, bc, percent, black1, chroma1, red1, factor1, blue1, red1, red2, green2, blue2, max, factor2, grey, r, g, b; ncs = w3trim(ncs).toUpperCase(); ncs = ncs.replace("(", ""); ncs = ncs.replace(")", ""); ncs = ncs.replace("NCS", "NCS "); ncs = ncs.replace(/ /g, " "); if (ncs.indexOf("NCS") == -1) {ncs = "NCS " + ncs;} ncs = ncs.match(/^(?:NCS|NCS\sS)\s(\d{2})(\d{2})-(N|[A-Z])(\d{2})?([A-Z])?$/); if (ncs === null) return false; black = parseInt(ncs[1], 10); chroma = parseInt(ncs[2], 10); bc = ncs[3]; if (bc != "N" && bc != "Y" && bc != "R" && bc != "B" && bc != "G") {return false;} percent = parseInt(ncs[4], 10) || 0; if (bc !== 'N') { black1 = (1.05 * black - 5.25); chroma1 = chroma; if (bc === 'Y' && percent <= 60) { red1 = 1; } else if (( bc === 'Y' && percent > 60) || ( bc === 'R' && percent <= 80)) { if (bc === 'Y') { factor1 = percent - 60; } else { factor1 = percent + 40; } red1 = ((Math.sqrt(14884 - Math.pow(factor1, 2))) - 22) / 100; } else if ((bc === 'R' && percent > 80) || (bc === 'B')) { red1 = 0; } else if (bc === 'G') { factor1 = (percent - 170); red1 = ((Math.sqrt(33800 - Math.pow(factor1, 2))) - 70) / 100; } if (bc === 'Y' && percent <= 80) { blue1 = 0; } else if (( bc === 'Y' && percent > 80) || ( bc === 'R' && percent <= 60)) { if (bc ==='Y') { factor1 = (percent - 80) + 20.5; } else { factor1 = (percent + 20) + 20.5; } blue1 = (104 - (Math.sqrt(11236 - Math.pow(factor1, 2)))) / 100; } else if ((bc === 'R' && percent > 60) || ( bc === 'B' && percent <= 80)) { if (bc ==='R') { factor1 = (percent - 60) - 60; } else { factor1 = (percent + 40) - 60; } blue1 = ((Math.sqrt(10000 - Math.pow(factor1, 2))) - 10) / 100; } else if (( bc === 'B' && percent > 80) || ( bc === 'G' && percent <= 40)) { if (bc === 'B') { factor1 = (percent - 80) - 131; } else { factor1 = (percent + 20) - 131; } blue1 = (122 - (Math.sqrt(19881 - Math.pow(factor1, 2)))) / 100; } else if (bc === 'G' && percent > 40) { blue1 = 0; } if (bc === 'Y') { green1 = (85 - 17/20 * percent) / 100; } else if (bc === 'R' && percent <= 60) { green1 = 0; } else if (bc === 'R' && percent > 60) { factor1 = (percent - 60) + 35; green1 = (67.5 - (Math.sqrt(5776 - Math.pow(factor1, 2)))) / 100; } else if (bc === 'B' && percent <= 60) { factor1 = (1*percent - 68.5); green1 = (6.5 + (Math.sqrt(7044.5 - Math.pow(factor1, 2)))) / 100; } else if ((bc === 'B' && percent > 60) || ( bc === 'G' && percent <= 60)) { green1 = 0.9; } else if (bc === 'G' && percent > 60) { factor1 = (percent - 60); green1 = (90 - (1/8 * factor1)) / 100; } factor1 = (red1 + green1 + blue1)/3; red2 = ((factor1 - red1) * (100 - chroma1) / 100) + red1; green2 = ((factor1 - green1) * (100 - chroma1) / 100) + green1; blue2 = ((factor1 - blue1) * (100 - chroma1) / 100) + blue1; if (red2 > green2 && red2 > blue2) { max = red2; } else if (green2 > red2 && green2 > blue2) { max = green2; } else if (blue2 > red2 && blue2 > green2) { max = blue2; } else { max = (red2 + green2 + blue2) / 3; } factor2 = 1 / max; r = parseInt((red2 * factor2 * (100 - black1) / 100) * 255, 10); g = parseInt((green2 * factor2 * (100 - black1) / 100) * 255, 10); b = parseInt((blue2 * factor2 * (100 - black1) / 100) * 255, 10); if (r > 255) {r = 255;} if (g > 255) {g = 255;} if (b > 255) {b = 255;} if (r < 0) {r = 0;} if (g < 0) {g = 0;} if (b < 0) {b = 0;} } else { grey = parseInt((1 - black / 100) * 255, 10); if (grey > 255) {grey = 255;} if (grey < 0) {grey = 0;} r = grey; g = grey; b = grey; } return { r : r, g : g, b : b }; } function rgbToHsl(r, g, b) { var min, max, i, l, s, maxcolor, h, rgb = []; rgb[0] = r / 255; rgb[1] = g / 255; rgb[2] = b / 255; min = rgb[0]; max = rgb[0]; maxcolor = 0; for (i = 0; i < rgb.length - 1; i++) { if (rgb[i + 1] <= min) {min = rgb[i + 1];} if (rgb[i + 1] >= max) {max = rgb[i + 1];maxcolor = i + 1;} } if (maxcolor == 0) { h = (rgb[1] - rgb[2]) / (max - min); } if (maxcolor == 1) { h = 2 + (rgb[2] - rgb[0]) / (max - min); } if (maxcolor == 2) { h = 4 + (rgb[0] - rgb[1]) / (max - min); } if (isNaN(h)) {h = 0;} h = h * 60; if (h < 0) {h = h + 360; } l = (min + max) / 2; if (min == max) { s = 0; } else { if (l < 0.5) { s = (max - min) / (max + min); } else { s = (max - min) / (2 - max - min); } } s = s; return {h : h, s : s, l : l}; } function rgbToHwb(r, g, b) { var h, w, bl; r = r / 255; g = g / 255; b = b / 255; max = Math.max(r, g, b); min = Math.min(r, g, b); chroma = max - min; if (chroma == 0) { h = 0; } else if (r == max) { h = (((g - b) / chroma) % 6) * 360; } else if (g == max) { h = ((((b - r) / chroma) + 2) % 6) * 360; } else { h = ((((r - g) / chroma) + 4) % 6) * 360; } w = min; bl = 1 - max; return {h : h, w : w, b : bl}; } function rgbToCmyk(r, g, b) { var c, m, y, k; r = r / 255; g = g / 255; b = b / 255; max = Math.max(r, g, b); k = 1 - max; if (k == 1) { c = 0; m = 0; y = 0; } else { c = (1 - r - k) / (1 - k); m = (1 - g - k) / (1 - k); y = (1 - b - k) / (1 - k); } return {c : c, m : m, y : y, k : k}; } function toHex(n) { var hex = n.toString(16); while (hex.length < 2) {hex = "0" + hex; } return hex; } function cl(x) { console.log(x); } function w3trim(x) { return x.replace(/^\s+|\s+$/g, ''); } function isHex(x) { return ('0123456789ABCDEFabcdef'.indexOf(x) > -1); } window.w3color = w3color; })(); function w3SetColorsByAttribute() { var z, i, att; z = document.getElementsByTagName("*"); for (i = 0; i < z.length; i++) { att = z[i].getAttribute("data-w3-color"); if (att) { z[i].style.backgroundColor = w3color(att).toRgbString(); } } }