@skhemata/skhemata-form/src/validator/lib/isRgbColor.js

Skhemata Form Web Component. This web component can be used as base web component when working with forms and inputs.

import assertString from './util/assertString';

const rgbColor = /^rgb\((([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5]),){2}([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\)$/;
const rgbaColor = /^rgba\((([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5]),){3}(0?\.\d|1(\.0)?|0(\.0)?)\)$/;
const rgbColorPercent = /^rgb\((([0-9]%|[1-9][0-9]%|100%),){2}([0-9]%|[1-9][0-9]%|100%)\)/;
const rgbaColorPercent = /^rgba\((([0-9]%|[1-9][0-9]%|100%),){3}(0?\.\d|1(\.0)?|0(\.0)?)\)/;

export default function isRgbColor(str, includePercentValues = true) {
  assertString(str);

  if (!includePercentValues) {
    return rgbColor.test(str) || rgbaColor.test(str);
  }

  return rgbColor.test(str) ||
    rgbaColor.test(str) ||
    rgbColorPercent.test(str) ||
    rgbaColorPercent.test(str);
}