import { useEffect } from "react"; const brandColor = "#292929"; const brandTextColor = "#ffffff"; export function colorNameToHex(color: string) { const colors = { aliceblue: "#f0f8ff", antiquewhite: "#faebd7", aqua: "#00ffff", aquamarine: "#7fffd4", azure: "#f0ffff", beige: "#f5f5dc", bisque: "#ffe4c4", black: "#000000", blanchedalmond: "#ffebcd", blue: "#0000ff", blueviolet: "#8a2be2", brown: "#a52a2a", burlywood: "#deb887", cadetblue: "#5f9ea0", chartreuse: "#7fff00", chocolate: "#d2691e", coral: "#ff7f50", cornflowerblue: "#6495ed", cornsilk: "#fff8dc", crimson: "#dc143c", cyan: "#00ffff", darkblue: "#00008b", darkcyan: "#008b8b", darkgoldenrod: "#b8860b", darkgray: "#a9a9a9", darkgreen: "#006400", darkkhaki: "#bdb76b", darkmagenta: "#8b008b", darkolivegreen: "#556b2f", darkorange: "#ff8c00", darkorchid: "#9932cc", darkred: "#8b0000", darksalmon: "#e9967a", darkseagreen: "#8fbc8f", darkslateblue: "#483d8b", darkslategray: "#2f4f4f", darkturquoise: "#00ced1", darkviolet: "#9400d3", deeppink: "#ff1493", deepskyblue: "#00bfff", dimgray: "#696969", dodgerblue: "#1e90ff", firebrick: "#b22222", floralwhite: "#fffaf0", forestgreen: "#228b22", fuchsia: "#ff00ff", gainsboro: "#dcdcdc", ghostwhite: "#f8f8ff", gold: "#ffd700", goldenrod: "#daa520", gray: "#808080", green: "#008000", greenyellow: "#adff2f", honeydew: "#f0fff0", hotpink: "#ff69b4", "indianred ": "#cd5c5c", indigo: "#4b0082", ivory: "#fffff0", khaki: "#f0e68c", lavender: "#e6e6fa", lavenderblush: "#fff0f5", lawngreen: "#7cfc00", lemonchiffon: "#fffacd", lightblue: "#add8e6", lightcoral: "#f08080", lightcyan: "#e0ffff", lightgoldenrodyellow: "#fafad2", lightgrey: "#d3d3d3", lightgreen: "#90ee90", lightpink: "#ffb6c1", lightsalmon: "#ffa07a", lightseagreen: "#20b2aa", lightskyblue: "#87cefa", lightslategray: "#778899", lightsteelblue: "#b0c4de", lightyellow: "#ffffe0", lime: "#00ff00", limegreen: "#32cd32", linen: "#faf0e6", magenta: "#ff00ff", maroon: "#800000", mediumaquamarine: "#66cdaa", mediumblue: "#0000cd", mediumorchid: "#ba55d3", mediumpurple: "#9370d8", mediumseagreen: "#3cb371", mediumslateblue: "#7b68ee", mediumspringgreen: "#00fa9a", mediumturquoise: "#48d1cc", mediumvioletred: "#c71585", midnightblue: "#191970", mintcream: "#f5fffa", mistyrose: "#ffe4e1", moccasin: "#ffe4b5", navajowhite: "#ffdead", navy: "#000080", oldlace: "#fdf5e6", olive: "#808000", olivedrab: "#6b8e23", orange: "#ffa500", orangered: "#ff4500", orchid: "#da70d6", palegoldenrod: "#eee8aa", palegreen: "#98fb98", paleturquoise: "#afeeee", palevioletred: "#d87093", papayawhip: "#ffefd5", peachpuff: "#ffdab9", peru: "#cd853f", pink: "#ffc0cb", plum: "#dda0dd", powderblue: "#b0e0e6", purple: "#800080", rebeccapurple: "#663399", red: "#ff0000", rosybrown: "#bc8f8f", royalblue: "#4169e1", saddlebrown: "#8b4513", salmon: "#fa8072", sandybrown: "#f4a460", seagreen: "#2e8b57", seashell: "#fff5ee", sienna: "#a0522d", silver: "#c0c0c0", skyblue: "#87ceeb", slateblue: "#6a5acd", slategray: "#708090", snow: "#fffafa", springgreen: "#00ff7f", steelblue: "#4682b4", tan: "#d2b48c", teal: "#008080", thistle: "#d8bfd8", tomato: "#ff6347", turquoise: "#40e0d0", violet: "#ee82ee", wheat: "#f5deb3", white: "#ffffff", whitesmoke: "#f5f5f5", yellow: "#ffff00", yellowgreen: "#9acd32", }; return colors[color.toLowerCase() as keyof typeof colors] !== undefined ? colors[color.toLowerCase() as keyof typeof colors] : false; } function computeContrastRatio(a: number[], b: number[]) { const lum1 = computeLuminance(a[0], a[1], a[2]); const lum2 = computeLuminance(b[0], b[1], b[2]); const brightest = Math.max(lum1, lum2); const darkest = Math.min(lum1, lum2); return (brightest + 0.05) / (darkest + 0.05); } function computeLuminance(r: number, g: number, b: number) { const a = [r, g, b].map((v) => { v /= 255; return v <= 0.03928 ? v / 12.92 : Math.pow((v + 0.055) / 1.055, 2.4); }); return a[0] * 0.2126 + a[1] * 0.7152 + a[2] * 0.0722; } function hexToRGB(hex: string) { const color = hex.replace("#", ""); return [parseInt(color.slice(0, 2), 16), parseInt(color.slice(2, 4), 16), parseInt(color.slice(4, 6), 16)]; } function getContrastingTextColor(bgColor: string | null): string { bgColor = bgColor == "" || bgColor == null ? brandColor : bgColor; const rgb = hexToRGB(bgColor); const whiteContrastRatio = computeContrastRatio(rgb, [255, 255, 255]); const blackContrastRatio = computeContrastRatio(rgb, [41, 41, 41]); //#292929 return whiteContrastRatio > blackContrastRatio ? brandTextColor : brandColor; } export function isValidHexCode(val: string | null) { if (val) { val = val.indexOf("#") === 0 ? val : "#" + val; const regex = new RegExp("^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$"); return regex.test(val); } return false; } export function fallBackHex(val: string | null): string { if (val) if (colorNameToHex(val)) return colorNameToHex(val) as string; return brandColor; } const BrandColor = ({ val = brandColor }: { val: string | undefined | null }) => { // ensure acceptable hex-code val = isValidHexCode(val) ? (val?.indexOf("#") === 0 ? val : "#" + val) : fallBackHex(val); useEffect(() => { document.documentElement.style.setProperty("--brand-color", val); document.documentElement.style.setProperty("--brand-text-color", getContrastingTextColor(val)); }, [val]); return null; }; export default BrandColor;