Color Perception

Color perception is the ability to detect, distinguish, and identify colors. Impairments in color perception range from complete color blindness (achromatopsia) to partial deficiencies in distinguishing specific color ranges, such as red-green or blue-yellow color vision deficiency. In digital accessibility, accommodating color perception differences means never relying on color alone to convey information, maintaining sufficient contrast ratios, and providing alternative visual indicators such as patterns, labels, or icons alongside color coding.