PHP: HEX to CMYK
<p>How do I convert a HEX color value to CMYK equivalent in php?</p>

<p>I want to write a function that does that. But Ive got no clue how to convert hex to CMYK</p>

<pre><code>eg: 
&lt;?php

hex2CMYK('#000000'); //result: array('0.0','0.0','0.0','0.0');

?&gt;
</code></pre>
