Implement color name parser

src/color/types/_tests_/colorName.spec.ts

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+import { isColorName, named } from '../colorName'
+
+describe('isColorName', () => {
+  Object.keys(named).forEach(name => {
+    it(`returns true for recognized color name: ${name}`, () => {
+      expect(isColorName(name)).toBe(true)
+    })
+  })
+
+  it('is not case sensitive', () => {
+    expect(isColorName('royalblue')).toBe(true)
+    expect(isColorName('RoyalBlue')).toBe(true)
+  })
+
+  const invalid = [
+    '#33CCFF', // hex color value
+    'rgb(127, 255, 255)', // non-hex color value
+    ' blue ', // untrimmed spaces
+    'transparent', // special keyword
+    'rainbow', // invalid color string
+  ]
+  invalid.forEach(str => {
+    it(`returns false for invalid color name: ${str}`, () => {
+      expect(isColorName(str)).toBe(false)
+    })
+  })
+})

src/color/types/colorName.ts

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+export const named = {
+  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',
+  darkgrey: '#A9A9A9',
+  darkkhaki: '#BDB76B',
+  darkmagenta: '#8B008B',
+  darkolivegreen: '#556B2F',
+  darkorange: '#FF8C00',
+  darkorchid: '#9932CC',
+  darkred: '#8B0000',
+  darksalmon: '#E9967A',
+  darkseagreen: '#8FBC8F',
+  darkslateblue: '#483D8B',
+  darkslategray: '#2F4F4F',
+  darkslategrey: '#2F4F4F',
+  darkturquoise: '#00CED1',
+  darkviolet: '#9400D3',
+  deeppink: '#FF1493',
+  deepskyblue: '#00BFFF',
+  dimgray: '#696969',
+  dimgrey: '#696969',
+  dodgerblue: '#1E90FF',
+  firebrick: '#B22222',
+  floralwhite: '#FFFAF0',
+  forestgreen: '#228B22',
+  fuchsia: '#FF00FF',
+  gainsboro: '#DCDCDC',
+  ghostwhite: '#F8F8FF',
+  goldenrod: '#DAA520',
+  gold: '#FFD700',
+  gray: '#808080',
+  green: '#008000',
+  greenyellow: '#ADFF2F',
+  grey: '#808080',
+  honeydew: '#F0FFF0',
+  hotpink: '#FF69B4',
+  indianred: '#CD5C5C',
+  indigo: '#4B0082',
+  ivory: '#FFFFF0',
+  khaki: '#F0E68C',
+  lavenderblush: '#FFF0F5',
+  lavender: '#E6E6FA',
+  lawngreen: '#7CFC00',
+  lemonchiffon: '#FFFACD',
+  lightblue: '#ADD8E6',
+  lightcoral: '#F08080',
+  lightcyan: '#E0FFFF',
+  lightgoldenrodyellow: '#FAFAD2',
+  lightgray: '#D3D3D3',
+  lightgreen: '#90EE90',
+  lightgrey: '#D3D3D3',
+  lightpink: '#FFB6C1',
+  lightsalmon: '#FFA07A',
+  lightseagreen: '#20B2AA',
+  lightskyblue: '#87CEFA',
+  lightslategray: '#778899',
+  lightslategrey: '#778899',
+  lightsteelblue: '#B0C4DE',
+  lightyellow: '#FFFFE0',
+  lime: '#00FF00',
+  limegreen: '#32CD32',
+  linen: '#FAF0E6',
+  magenta: '#FF00FF',
+  maroon: '#800000',
+  mediumaquamarine: '#66CDAA',
+  mediumblue: '#0000CD',
+  mediumorchid: '#BA55D3',
+  mediumpurple: '#9370DB',
+  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: '#DB7093',
+  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',
+  slategrey: '#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',
+} as const
+
+export type ColorName = keyof typeof named
+
+export function isColorName(color: string): color is ColorName {
+  return color.toLowerCase() in named
+}