Pick a colour model above. betterLCH rel-chroma is relative to lightness (100% = the most the gamut allows there). In betterLCH / OKLCH / LMS, out-of-gamut field samples are hatched & mapped to the limit when painting; RGB is always in gamut. Switching models keeps the colour fixed.
Drag paints colour 1, Ctrl-drag paints colour 2 (click a swatch to edit it). ⌘/Ctrl+Z undo, ⇧⌘/Ctrl+Z redo.
Space/middle-drag pan · scroll zoom · Alt pick · B/I tools · 0 fit · 1 100%.