Understanding OKLCH Chroma (C):
Chroma (C) controls the color's intensity or 'vividness'.
Slider (0-100%): This adjusts Chroma. 100% targets a reference colorfulness (around 0.4 in absolute OKLCH, typical for sRGB's brightest colors).
Dynamic Range with L & H: The actual range of Chroma (vividness) you can achieve is not constant. It changes significantly depending on the current Lightness (L) and Hue (H) values you've selected.
Adaptive Slider Track: The gradient on the Chroma slider's track dynamically updates. This visual guide shows you the maximum Chroma available within the sRGB color space for your current L and H settings. If you set Chroma beyond this visible limit, the a will be clamped to the most vivid sRGB-displayable equivalent.