trichromats:
Trichromacy or trichromaticism is the possessing of three independent channels for conveying color information, derived from the three different types of cone cells in the eye. Organisms with trichromacy are called trichromats. [Wikipedia]
Noted in the Letters section for NewScientist (9 September 2017) in a letter from Tony Durham:
Perhaps it is something to do with the disabling effect of living with atypical colour vision in a society designed for trichromats. If so, I would expect the effects to be particularly noticeable when looking at TV and computer screens, colour photographs and paintings, all of which assume trichromatic colour vision. Further investigation might yield insights into how we see colour.