Best with UI screenshots, charts, or design mockups
Upload an image to preview it through 4 types of color blindness
About the Color Blindness Simulator Tool
Roughly 1 in 12 men and 1 in 200 women have some form of color vision deficiency. Upload a UI screenshot, chart, or design mockup and DCPIXEL simulates all four major types of color blindness side by side, helping you catch accessibility issues before you ship.
100% Private — Processed in Your Browser
Every file stays on your device. DCPIXEL processes images entirely using the browser's built-in Canvas API and WebAssembly — zero server uploads, zero data collection.
Premium Features & Batch Processing
Try this tool free a few times per day. Upgrade to DCPixel PRO to unlock unlimited exports, high-speed batch processing, and full-resolution AI tools.
Frequently Asked Questions
How accurate is this simulation?+
It uses widely-used color transformation matrices to approximate how each color vision deficiency perceives color. It is a helpful guide, not a clinical diagnostic tool.
What should I check for in the results?+
Look for elements that rely only on color to convey meaning — like red/green status indicators — and check whether they remain distinguishable in each simulation.
Which type of color blindness is most common?+
Deuteranopia (reduced green sensitivity) is the most common form, followed by protanopia (reduced red sensitivity). Both primarily affect men.
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