@atlaskit/adf-schema/dist/esm/utils/rgb-to-hex.js

Shared package that contains the ADF-schema (json) and ProseMirror node/mark specs

import _slicedToArray from "@babel/runtime/helpers/slicedToArray";
// eslint-disable-line import/no-namespace

export function rgbToHex(value) {
  var matches = value.match(/(0?\.?[0-9]{1,3})%?\b/g);
  if (matches && matches.length >= 3) {
    var _matches$map = matches.map(Number),
      _matches$map2 = _slicedToArray(_matches$map, 3),
      red = _matches$map2[0],
      green = _matches$map2[1],
      blue = _matches$map2[2];
    return '#' + (blue | green << 8 | red << 16 | 1 << 24).toString(16).slice(1);
  }
  return null;
}