Nice, but did you know about Color::Spectrum? extremely wrote the code, i just gave it a home. :)

If you look in the source, you will see there are methods for RGB-HSL(I) converstions that do the job with far fewer lines of code. I should update the POD to document those as well ... anyways, check it out. Might give some ideas for refactoring.

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)