chromaticity vs hue

chromaticity

noun
  • An objective specification of the quality of a colour, regardless of its luminance. 

hue

noun
  • A color, or shade of color; tint; dye. 

  • A character; aspect. 

  • The characteristic related to the light frequency that appears in the color, for instance red, yellow, green, cyan, blue or magenta. 

How often have the words chromaticity and hue occurred in a corpus of books? (source: Google Ngram Viewer )