iobroker.yeelight-2/yeelight-wifi/src/utils.js

ioBroker Yeelight Adapter

export const hexToRgb = (hex) => {
  // Expand shorthand form (e.g. "03F") to full form (e.g. "0033FF")
  const shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
  const newHex = hex.replace(shorthandRegex, (m, r, g, b) => r + r + g + g + b + b);

  const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(newHex);
  return result ? {
    red: parseInt(result[1], 16),
    green: parseInt(result[2], 16),
    blue: parseInt(result[3], 16),
  } : null;
};