| 79 | |
| 80 | // Checks both rgb and hex colors for contrast and returns true if the color is in the dark spectrum |
| 81 | export const isDarkColor = (color: string): boolean => { |
| 82 | let r = 0; |
| 83 | let g = 0; |
| 84 | let b = 0; |
| 85 | if (color.startsWith("#")) { |
| 86 | if (color.length < 7) { |
| 87 | return true; |
| 88 | } |
| 89 | |
| 90 | r = parseInt(color.substr(1, 2), 16); |
| 91 | g = parseInt(color.substr(3, 2), 16); |
| 92 | b = parseInt(color.substr(5, 2), 16); |
| 93 | } else { |
| 94 | const rgbValues = color |
| 95 | .replace("rgb(", "") |
| 96 | .replace("rgba(", "") |
| 97 | .replace(")", "") |
| 98 | .split(","); |
| 99 | if (rgbValues.length < 3) { |
| 100 | return true; |
| 101 | } |
| 102 | |
| 103 | r = parseInt(rgbValues[0], 10); |
| 104 | g = parseInt(rgbValues[1], 10); |
| 105 | b = parseInt(rgbValues[2], 10); |
| 106 | } |
| 107 | |
| 108 | const yiq = (r * 299 + g * 587 + b * 114) / 1000; |
| 109 | return yiq < 128; |
| 110 | }; |
| 111 | |
| 112 | // Minimal cuid-like id |
| 113 | let lastCount = 0; |