Color Blindness Simulator
Upload an image and see how it looks to people with different types of color blindness
Click to upload or drag & drop
PNG, JPG, WEBP supported
What is a Color Blindness Simulator?
A color blindness simulator shows you how your images and designs appear to people with different types of color vision deficiency. About 8% of men and 0.5% of women have some form of color blindness. Testing your designs ensures they are accessible to everyone.
Frequently Asked Questions
What is Deuteranopia?
Deuteranopia is the most common form of color blindness, affecting the ability to distinguish green. People with deuteranopia cannot perceive green light and often confuse red and green colors.
What is Protanopia?
Protanopia affects the red cone cells in the eye, making it difficult to distinguish red from green. Reds appear very dark and dull to people with protanopia.
What is Tritanopia?
Tritanopia is a rare form of color blindness affecting blue cone cells. People with tritanopia have difficulty distinguishing blue from green and yellow from red.
What is Achromatopsia?
Achromatopsia is complete color blindness where a person sees only in shades of grey. It is very rare and is often accompanied by light sensitivity.
How do I make my design accessible for color blind users?
Use sufficient contrast between elements, never rely on color alone to convey information, add labels or patterns alongside color coding, and test your design using this simulator before publishing.
Is this simulator free?
Yes, completely free. Upload any image and instantly preview all color blindness types. No signup needed and your image never leaves your browser.