title: Formula to find the split complementaries of a color?
body: <p>I'm looking for a way to find the split complementaries of an RGB color. I'm currently using Javascript, but that doesn't matter. I'm just looking for psuedocode or any code examples, really. I've Googled this question a few times but I can't seem to come up with any results. Anybody have the formula for me? </p>
  
  <p>Also, I'd like to try to keep from converting to any other color formats during the process, as that can be a pain. </p>