Color Blindness Simulator
Preview how your colors appear with protanopia, deuteranopia, and tritanopia.
Configure inputs and click Run
How It Works & Educational Guide
How Nexifr's Color Blindness Simulator helps you identify and fix accessibility problems — covering WCAG criteria, colour contrast ratios, and screen reader compatibility.
01What problem does Color Blindness Simulator solve?
When you need to preview how your colors appear with protanopia, deuteranopia, and tritanopia, the challenge is finding a clear, no-account workflow with useful output. Nexifr's Color Blindness Simulator is designed to make that workflow quick and understandable. Processing happens in the browser. Uploaded files and pasted content are not sent to Nexifr.
02How it works & data handling
• Data handling: Processed in your browser — files and pasted content are not sent to Nexifr. • Clear output: Results are formatted for immediate use — download a file or copy the result where available. • No account required: You can use the tool without creating a Nexifr account.
03Common questions
• What do these types mean? Protanopia is red-blind, deuteranopia is green-blind (most common), and tritanopia is blue-blind.
Frequently Asked Questions
What do these types mean?
Protanopia is red-blind, deuteranopia is green-blind (most common), and tritanopia is blue-blind.