js hex-value to hashtag notation string

hexToHashtagNotation.js

const hexToHashtagNotation = (hexColor) => {
    let splittedColor = {
        red : (hexColor >> 16) & 0xFF,
        green : (hexColor >> 8) & 0xFF,
        blue : hexColor & 0xFF,
    }

    return Object.values(splittedColor).reduce((hexString, channelValue) => {
        const colorValueString = channelValue.toString(16).toUpperCase();
        hexString += colorValueString.length === 1 ? `0${colorValueString}` : `${colorValueString}`;
        return hexString;
    }, '#');
}

//// 0xEDF5FC => "#EDF5FC"