Three scales united,—each step a change of hue, value, and chroma.
Initial for hue, numeral above for value, numeral below for chroma.
Chroma is the quality by which we distinguish a strong color from a weak one.
For definitions of Hue, Value, and Chroma, see paragraphs 20–23.
Opposites unequal both in value and chroma (R7/3 and BG3/7).
We have no blue flower that can ...