colour-blindness

Noun

color blindness (countable and uncountable, plural color blindnesses)

1. (US) Any of several medical conditions in which the physical ability to see colors is impaired, especially achromatopsia or Daltonism.
2. (US, figuratively) An indifference to a person's skin color or race.
   • Despite the fact that race is embedded in American social life, "color blindness" has recently emerged as the dominant ideology of 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