alchemist-hsl is the official HSL color-space plugin for alchemist.js. It is
available as an npm package and a UMD module. It also is inlcuded by
default in alchemist-common and consiquentially, alchemist itself.
These conversions (and many of the other conversions in alchemist-common) were for the most part taken as-is from harthor's color-convert project. Many thanks to her and all of her project's contributors.
Other than Heather, many people and projects inspired alchemist as a whole. They are listed here:
Thanks to all of you!