export const alpha = (hex: string, a: number): string => { const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex)!; const r = parseInt(result[1], 16); const g = parseInt(result[2], 16); const b = parseInt(result[3], 16); return `rgba(${r}, ${g}, ${b}, ${a})`; };