react-native-ripple-button-reanimated/lib/module/hexToRgba.js

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

/* eslint-disable no-bitwise */
export function hexToRgbA(hex, opacity) {
  let c;

  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');
}
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