Chromatic Valence
Chromatic valence spaces incorporate two relatively perceptually uniform elements: a chromaticity scale, and a lightness scale. The lightness scale, determined using the Newhall-Nickerson-Judd value function, forms one axis of the color space:
The remaining two axes are formed by multiplying the two uniform chromaticity coordinates by the lightness, VJ:
This is essentially what Hunter used in his Lab color space. As with chromatic value, these functions are plotted with a scale factor of 2⅛ to give nearly equal radial distance for equal changes in Munsell chroma.
Read more about this topic: Adams Chromatic Valence Color Space