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

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

// eslint-disable-line import/no-namespace

var IS_HEX_REGEX = /^#([0-9A-Fa-f]{3}){1,2}$/;
export function isHex(color) {
  return IS_HEX_REGEX.test(color);
}