Constructing colours for maximum contrast

Posted by Martin on Stack Overflow See other posts from Stack Overflow or by Martin
Published on 2010-04-22T00:33:31Z Indexed on 2010/04/22 0:43 UTC
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colour

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language-agnostic

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algorithm

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mathematics

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graphics

I want to draw some items on screen, each item is in one of N sets. The number of sets changes all the time, so I need to calculate N different colours which are as different as possible (to make it easy to identify what is in which set).

So, for example with N = 2 my results would be black and white. With three I guess I would get all red, all green, all blue. For all four, it's less obvious what the correct answer is, and this is where I'm having trouble.

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