egirlskey/packages/frontend/src/scripts/color.ts

13 lines
386 B
TypeScript

/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
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})`;
};