Color Blindness Simulator

Color blindness (color vision deficiency) affects approximately 8% of men and 0.5% of women worldwide. Understanding how your designs appear to people with color blindness is crucial for accessibility.

Red-Green Color Blindness (Most Common)

Protanopia ~1% of males

Complete absence of red cone photoreceptors. Red appears as dark gray or black, and colors like orange, yellow, and green appear shifted. Protanopes cannot distinguish between red and green hues.

Protanomaly ~1% of males

Reduced sensitivity to red light. Similar to protanopia but less severe. Red, orange, and yellow appear more green.

Deuteranopia ~1% of males

Complete absence of green cone photoreceptors. Green appears beige, and red appears brownish-yellow. The most common form of color blindness.

Deuteranomaly ~5% of males

Reduced sensitivity to green light. The most common type of color deficiency, affecting about 5% of males. Green and red-yellow hues are shifted.

Blue-Yellow Color Blindness (Rare)

Tritanopia ~0.001%

Complete absence of blue cone photoreceptors. Blue appears green, and yellow appears violet or light gray. Extremely rare, affecting both males and females equally.

Tritanomaly Very rare

Reduced sensitivity to blue light. Blue and green, as well as yellow and red, are difficult to distinguish.

Complete Color Blindness (Extremely Rare)

Achromatopsia ~0.003%

Complete absence of color vision - sees only in shades of gray. Often accompanied by other visual problems like sensitivity to light and poor visual acuity.