For those that want to do this on iOS, I created a handy UIColor (or NSColor if OSX dev is your thing) category that can create 5 tone color schemes by passing

For those that want to do this on iOS, I created a handy UIColor (or NSColor if OSX dev is your thing) category that can create 5 tone color schemes by passing in one color. https://github.com/bennyguitar/Colours https://github.com/bennyguitar/Colours Beyond the color scheme part, another cool thing you can also do is find distances between colors using CIE_LAB specification. This is great for finding "like" colors on the fly.