ความอิ่มตัวของสี (Saturation)

Saturation describes how pure a color appears relative to gray. A fully saturated color contains no gray and appears vivid and intense, while a completely desaturated color is a shade of gray. In the HSL model, saturation is measured as a percentage from 0% (gray) to 100% (pure color). Saturation differs from chroma in that it is relative to the color's own lightness. High-saturation colors demand attention and are effective for calls-to-action, while low-saturation colors create calm, professional atmospheres.