What is deuteranopia?

Deuteranopia is a form of red-green color blindness where the green-sensitive cones in the eye are absent. It affects roughly 1% of males.

How common is deuteranopia?

Deuteranopia (no green cones) and deuteranomaly (reduced green sensitivity) together affect about 5-6% of males and 0.4% of females.

Red and green are most affected. They often appear as similar shades of brown or yellow to someone with deuteranopia.

Yes. Use the separate Protanopia and Tritanopia simulators on this site for the other common forms of color blindness.

Upload an image or enter a color to see how it appears to someone with deuteranopia.

Simulates how this color appears with Deuteranopia (green-blind).

Color

Original

Deuteranopia (green-blind)

Last updated: 2026-06-09 · Reviewed by Nham Vu