Janet bindings to Okhsv and Okhsl. The source code for the API has been obtained from here and adapted to a C header. Additionally I've added OkLab and OkLCh conversion with gammut clipping. The bindings are a 1 to 1 mapping of the original API, but function names are lispified.
(use jokcolor)
(okhsl-to-srgb [0.5 0.5 0.5])