This is an exceptionally interesting case of total color blindness cured by hypnotic treatment based on psychoanalytic insight. The patient had an anesthesia for all colors which probably began in infancy. This was an expression of the need to be free from dependence on his mother. A precipitating incident appeared in the form of a sore throat for which his mother gave him a colored scarf to wear. He suddenly felt that the scarf was dangerous and was choking him and he called out to have it removed. At the same time he lost his ability to see all colors. He associated color blindness with masculinity. The details of the case are convincingly presented.