Free Color Blindness Simulator
Upload an image to see how it appears with different types of color vision deficiency. The simulator applies matrix transformations to show protanopia (red-blind), deuteranopia (green-blind), and tritanopia (blue-blind) views. Compare with the normal view to understand accessibility implications for your designs. All processing happens locally.
Types
- Protanopia: Difficulty perceiving red light (1% of males)
- Deuteranopia: Difficulty perceiving green light (1% of males)
- Tritanopia: Difficulty perceiving blue light (rare)
Privacy
All processing happens locally. Images are never uploaded.
Last reviewed: July 2026.