title: How to generate different colors of same luminance for line chart in Java?
body: <p>I want to generate different colors for my line graphs:</p>
  
  <ul>
  <li>I want to generate equally different colors (for human eye)</li>
  <li>I want them to be the same luminance (not computed brightness)</li>
  </ul>
  
  <p>(this rules out RGB and HSL, YIQ is close but has not perfectly uniform luminance)</p>
  
  <p>Have you used any libraries (in Java) to handle uniform color scheme generation?</p>
  
  <p>I've spent a few days on this issue already, so I'm hoping some of you had the same problem and solved it.</p>
  
  <p>Thanks!</p>
  
  <p><strong>Edit</strong>: unfortunately, I cannot use java.awt packages on AppEngine (or anything that uses java.awt.Color).</p>