Is there a way I can use the CMYK color system in styling my design?

I'm afraid there's something of a misunderstanding of CMYK when displayed on a monitor, because every monitor is RGB all colours are RGB whether specified in CMYK or not.
When displaing CMYK colours they are converted to RGB.
  Now where CMYK would be useful? In CSS is where you are creating a webpage that's meant to be printed.
  Printers do not use RGB colors, they (often) use CMYK The device-cmyk() functional value allows style sheets to express device-dependent CMYK colors:   h3 {   color: red;   color: device-cmyk(0.5,0.1,0.0,0.2); }   Use the CMYK profile and Media Queries:   @media print {   /* All your print styles go here and colors in CMYK profile */ }

I think you need to use a server-side or client-side converters to convert your CMYK colors to RGB colors  This example must be useful : http://jsfiddle.net/drCqC/1/ Source : http://stackoverflow.com/questions/8869248/use-cmyk-on-web-page

CMYK is only for print media not for digital. If you are doing something which goes online than you have to USE RGB. It's very easy to convert the CMYK to RGB color than you can use the color code for your online projects.

Yes u can