title: C#, How to generate CMYK-compatible only colors in RGB
body: <p>following up on my first question ( <a href="https://stackoverflow.com/questions/5237104/c-convert-rgb-value-to-cmyk">C# convert RGB value to CMYK using an ICC profile?</a> )</p>
  
  <p>I would like to know if/how it is possible to generate <code>RGB</code> values only that have a direct equivalent in <code>CMYK</code>?</p>
  
  <p>Kind of like the old gif format that only has a palette of 256 colors, is it possible to generate <code>RGB</code> values constrained by a palette (the <code>CMYK</code> one here)?</p>
  
  <p>Thanks</p>