MIGHTYPAINT ACCESSIBILITY TOOL
Color-Blindness Simulator
Upload an image and compare the original with color-blindness simulations side by side. Everything stays in your browser.
Original
Simulation preview
Image Vision Lab
Drag & drop or choose an image
Actual uploaded image appears below on the left. Simulated result appears on the right.
Browser-only: nothing is uploaded or stored.
Simulation Mode
Original image
Your uploaded image/canvas appears here.
Simulated result
Updates instantly when you change mode.
Tip: If meaning disappears, add labels, icons, or stronger contrast.
How the simulator works
Upload an image, choose a vision-deficiency mode, compare the original and simulated result, then iterate until meaning stays clear.
Select your image
JPG, PNG, or WebP. Processing stays in the browser.
Choose a mode
Switch between red-blind, green-blind, blue-blind, and grayscale.
Compare both views
Look for confusing colors, missing labels, and weak contrast.
Fix and re-test
Update your design, export a new image, and test again.
Why simulate color-blindness?
A quick visual check catches accessibility issues in UI screens, charts, social graphics, and room palettes before they become costly mistakes.
Inclusive design
Color-vision deficiency affects a large audience, especially red/green perception.
Standards support
WCAG requires that color should not be the only way meaning is conveyed.
Better visuals
Charts, maps, and calls-to-action become clearer for everyone.
Simulation modes explained
Missing red cones
Protanopia
Reds darken; red and green can look similar.
Missing green cones
Deuteranopia
Reds and greens converge into brownish tones.
Missing blue cones
Tritanopia
Blues shift toward green; blue/purple can confuse.
Grayscale vision
Achromatopsia
Only luminance remains, so color-only meaning fails.
When to use this tool
UI / UX reviews
Check status icons, links, buttons, and dashboards before handoff.
Marketing assets
Make social graphics and promos readable in fast feeds.
Data visualizations
Test charts, heat maps, and legends that depend on color.
Print proofing
Review packaging, posters, brochures, and brand kits.
Client education
Show stakeholders why accessible color choices matter.
Quick audits
Pair this simulator with the Contrast Checker for a fast color audit.
Accessible color tips
Combine color with icons, labels, or patterns.
Never rely on hue alone to communicate meaning.
Check contrast ratios for foreground and background pairs.
Low contrast fails for many vision types, not just color-blindness.
Avoid red/green and blue/purple as the only distinction.
These pairs are the most commonly confused.
Use shapes, hatches, or line styles in charts and maps.
Give every data series a second visual cue beyond color.
Related MightyPaint tools
Frequently Asked Questions
?Will my image be uploaded or stored?
No. All processing happens in your browser. Nothing is sent to MightyPaint's servers.
?Which file types are supported?
JPG, PNG, and WebP images are supported, subject to your browser's memory limits.
?How accurate is the simulation?
It uses matrix-based approximations that provide a useful preview, but individual vision can vary.
?Do I still need to check contrast ratios?
Yes. Use this simulator with a contrast checker because color perception and luminance contrast are different accessibility checks.
Build visuals that work for everyone. Use the simulator early and often, then pair it with MightyPaint's contrast and palette tools to ship images, charts, and designs that stay clear in every viewing condition.