color blindness

• color-blindness, colorblindness
• colour blindness, colour-blindness, colourblindness (British spelling)

color blind + -ness or color + blindness

color blindness (countable and uncountable, plural color blindnesses) (American spelling)

1. (medicine, ophthalmology) Any of several medical conditions in which the physical ability to see colors is impaired, especially achromatopsia, Daltonism.
2. (figuratively) Indifference to a person's skin color or race.
   • 2003, Kimberly L. Ebert, "Demystifying Color-Blind Ideology", in C. Herring et al., Skin Deep: How Race and Complexion Matter in the "Color-Blind" Era, p. 1985:

     Despite the fact that race is embedded in American social life, "color blindness" has recently emerged as the dominant ideology of race.

• red-green color blindness / red-green colour blindness

• Daltonism