title: RGB to CMYK conversion
body: <p>Is there any way to convert HEX encoded RGB colors to CMYK in PHP? I have tried this <a href="https://stackoverflow.com/questions/3333585/php-hex-to-cmyk"><strong>PHP: HEX to CMYK</strong></a> but there is a bit difference in the colors, may be the above answer converts hex to RGB then converts it to CMYK.</p>