const inRGB = inGamut('rgb')

inRGB({ mode: 'oklch', l: 1, c: 0, h: 0 }) // => false
// white is in sRGB and return should be true

We found this issue in OKLCH color picker.

I can’t remember this issue previously. It could be related to some recent changes, but it is hard to say when exactly (we are using culori version 4.0.1).