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Noun
1. chroma; chroma saturation; color saturation (colour)
Wikipedia definition
2. ColorfulnessIn colorimetry and color theory, colorfulness, chroma, and saturation are related but distinct concepts referring to the perceived intensity of a specific color. Colorfulness is the degree of difference between a color and gray. Chroma is the colorfulness relative to the brightness of another color that appears white under similar viewing conditions. Saturation is the colorfulness of a color relative to its own brightness.
Read “Colorfulness” on English Wikipedia
Read “彩度” on Japanese Wikipedia
Read “Colorfulness” on DBpedia

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