Lch color channels not matching expected semantics #8125
Description
Bevy version
Release 0.10.0 (#7919), and same issue on main branch as of f255872
[Optional] Relevant system information
AdapterInfo { name: "NVIDIA GeForce RTX 3060", vendor: 4318, device: 9476, device_type: DiscreteGpu, driver: "NVIDIA", driver_info: "528.02", backend: Vulkan }
You should also consider testing the examples of our upstream dependencies to help isolate any setup-specific issue:
What you did
Changed 2d_shapes example to this code: https://controlc.com/db7b150c
It creates a color swatch using the Lch color space.
Each row is the same lightness, each column the same hue.
What went wrong
The lightness channel was expected to produce black when set to 0.
It does so here: https://css.land/lch/
But in bevy it creates the bottom row, so black only when chroma is set to 0 as well.
.. but that means the row is not uniform lightness, since black is darker than any other color.
Similarly, at full lightness 1.0 I get white only if chroma is 0.0. And again, that's not the same lightness as the other colors in the same row.
