Comparison of the HSL and HSV color spaces when mapped to a cylinder, with corner cut-away shown.
<a href="//commons.wikimedia.org/wiki/User:SharkD" class="mw-redirect" title="User:SharkD">SharkD</a>
CC BY-SA 4.0
Self-made. Source-code available at the POV-Ray <a rel="nofollow" class="external text" href="http://lib.povray.org/searchcollection/index2.php">Object Collection</a>.