colorblindness

1. A defect in perception of colors, caused by a deficiency of certain specialized cells in the retina that are sensitive to different colors. The condition may be partial (as in “red-green colorblindness,” in which a person cannot distinguish red from green), or complete (in which the person sees all colors as gray).

Notes

By extension, the law is said to be colorblind in its judgments, which are supposed to ignore a defendant 's race.