Chroma
How saturated or pure a colour is — its distance from grey. High-chroma colours are clear and vivid; low-chroma colours are muted and dusty.
What it means
Chroma describes a colour's intensity. A bright fuchsia is high-chroma. A dusty rose with the same hue but more grey mixed in is low-chroma. Chroma matters in color analysis because faces have a chroma too: clear features need clear colours; muted features get washed out by overly bright ones, and bright features get drowned by overly muted ones.
How it shows up in your Better in Style analysis
Chroma is the soft-clear axis of the 12-season system. Once we know whether you read clear, soft or somewhere in between, we can ignore entire ranges of colour that would otherwise compete with your face.