HSLuv: Human-friendly HSL Color Space

HSLuv is a Python implementation of a human-friendly HSL (Hue, Saturation, Lightness) color space, which is an alternative to standard HSL. It's built upon CIELUV, a perceptually uniform color space, extending it with a saturation component that allows spanning all available chroma as a percentage. The library, currently at version 5.0.4, provides functions for converting between HSLuv, HPLuv (pastel variant), RGB, and hexadecimal color representations. It maintains an active development status with periodic updates.