1  import hexToRgb from './hex-to-rgb';
 2  
 3  export default function getContrastColor(forColor: string): 'black' | 'white' {
 4    const trimmed = forColor.trim();
 5    const isHex = trimmed.startsWith('#');
 6  
 7    let color: { r: number; g: number; b: number; a: number };
 8  
 9    if (isHex) {
10      const converted = hexToRgb(trimmed);
11      if (!converted) return 'white';
12  
13      color = { ...converted, a: 1 };
14    } else {
15      const [r, g, b, a] = trimmed
16        .replace('rgba(', '')
17        .replace('rgb(', '')
18        .replace(')', '')
19        .split(',')
20        .map((v) => Number(v));
21  
22      color = { r, g, b, a };
23    }
24  
25    const { r, g, b, a } = color;
26    const brightness = r * 0.299 + g * 0.587 + b * 0.114 + (1 - a) * 255;
27  
28    return brightness > 170 ? 'black' : 'white';
29  }