Look up colour blind or color blind in Wiktionary, the free dictionary.

Color blindness, also known as color vision deficiency, is a symptom that concerns diminished color vision and the decreased ability to see or distinguish colors.

The term may also refer to:

Vision

• Congenital red-green color blindness, the genetic condition that causes the most cases of color blindness.
• Dichromacy, a type of color vision possessed by most mammals; partial color blindness when in humans.
• Monochromacy, a lack of color vision; total color blindness when in humans.
• Achromatopsia, a syndrome that includes total color blindness.
• Blue cone monochromacy, a genetic condition that causes total color blindness.

Law and sociology

• Racial color blindness, discussing the connotations surrounding the term in law and society

Arts and entertainment

• Colour Blind (play), by Kaul and Kalki Koechlin