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Why Color Blindness Simulator
- Test your designs against 7 forms of color vision deficiency.
- All filters applied via SVG feColorMatrix, accurate and fast.
- Helps you catch low-contrast pairings before they ship.
Common questions
Is Color Blindness Simulator free to use?
Yes. Color Blindness Simulator is completely free. There is no sign up, no trial, and no usage cap.
Do I need an account to use Color Blindness Simulator?
No. You can start using Color Blindness Simulator straight away. We do not ask for an email address or a login.
Is my data uploaded to a server when I use Color Blindness Simulator?
No. Color Blindness Simulator runs entirely inside your browser, so the colors you enter never leaves your device and nothing is sent to us.
Do you store the colors I use with Color Blindness Simulator?
No. Because everything happens locally in your browser, there is nothing for us to store. Close the tab and it is gone.
Can I copy colors as HEX, RGB, or HSL?
Yes. Color Blindness Simulator shows colors in the common formats and lets you copy the value you need with one click.
Can I use the colors from Color Blindness Simulator in my design tool?
Absolutely. Copy the value and paste it into Figma, your code, or any other app.
How do I use Color Blindness Simulator?
Enter or paste your colors and Color Blindness Simulator updates the result as you go. When it looks right, copy or download it with one click.
Does Color Blindness Simulator work on phones and tablets?
Yes. Color Blindness Simulator is responsive and works in any modern browser on mobile, tablet, and desktop.
Which browsers does Color Blindness Simulator support?
It works in current versions of Chrome, Firefox, Safari, and Edge. For the best experience, keep your browser up to date.
Is there a limit on how often I can use Color Blindness Simulator?
No. You can use Color Blindness Simulator as many times as you need, at no cost.
Can I use Color Blindness Simulator for commercial or client work?
Yes. You are free to use the output in personal, educational, and commercial projects.
Why is Color Blindness Simulator free?
The site is supported by advertising, which lets us keep every tool free and open to everyone.
What should I do if Color Blindness Simulator gives an unexpected result?
First check that your colors is formatted as expected. If something still looks wrong, use the feedback link on the page and we will take a look.