react-native-ripple-button-reanimated/src/hexToRgba.ts

React Native Button with ripple effect. It works for android and ios.

/* eslint-disable no-bitwise */
export function hexToRgbA(hex: string, opacity: number) {
  let c: any;
  if (/^#([A-Fa-f0-9]{3}){1,2}$/.test(hex)) {
    c = hex.substring(1).split('');
    if (c.length === 3) {
      c = [c[0], c[0], c[1], c[1], c[2], c[2]];
    }
    c = `0x${c.join('')}`;
    return `rgba(${[(c >> 16) & 255, (c >> 8) & 255, c & 255].join(',')},${opacity})`;
  }
  throw new Error('Bad Hex');
}