Accessibility & Color Blindness Simulator
Verify UI alerts, charts, and game art for Deuteranopia, Protanopia, and Tritanopia directly in browser memory.
Direct Answer & Pipeline Overview
Accessibility & Color Blindness Simulator is a specialized, 100% client-side engineering utility developed by Atlyxen Studios. It processes calculations and conversions directly inside your browser memory using hardware-accelerated WebAssembly and WebGL, guaranteeing instant results with zero server file transfers and zero data retention.
How to Use the Accessibility & Color Blindness Simulator
Upload or Select Graphic
Upload your own user interface mockup, game asset, or chart, or choose from built-in sample graphics.
Select Vision Condition
Pick from red-blind (protan), green-blind (deutan), blue-blind (tritan), or total monochromacy conditions.
Interact with Split-Wipe
Drag the vertical divider handle across the graphic to compare normal trichromatic vision against the simulated view.
Audit & Export
Check if icons, text labels, and contrast remain clear without relying solely on hue, and download the simulated PNG.
Key Technical Capabilities
Physiologically validated 3x3 Brettel-Vienot-Mollon and Machado simulation matrices
Simulates all 8 color vision deficiencies (Deuteranomaly, Deuteranopia, Protanomaly, Protanopia, Tritanomaly, Tritanopia, Achromatopsia, Achromatomaly)
Adjustable deficiency severity slider from mild (10%) to complete (100%)
Interactive draggable split-wipe comparison slider between normal and simulated vision
Pre-loaded test graphics: UI status alerts, multi-series data charts, and rainbow color spectrum
WCAG 2.1 Success Criterion 1.4.1 (Use of Color) audit guidelines
Instant PNG export of simulated imagery for accessibility compliance reports
100% private, client-side image computation with zero server uploads
Frequently Asked Questions
What percentage of the population has color vision deficiency (CVD)?
Approximately 8% of men and 0.5% of women of Northern European descent have some form of red-green color vision deficiency. Deuteranomaly (green-weakness) is by far the most prevalent, accounting for over half of all color blind individuals.
What is WCAG Success Criterion 1.4.1 (Use of Color)?
WCAG 1.4.1 requires that color must not be used as the only visual means of conveying information, indicating an action, prompting a response, or distinguishing a visual element. For example, a form input error should not just turn red; it must also display an error icon or explicit warning message.
How accurate is this simulation compared to real color blindness?
This tool uses the scientifically recognized Brettel-Vienot-Mollon and Machado color transformation matrices. By transforming sRGB coordinates into LMS (Long, Medium, Short cone) color space and projecting onto dichromatic confusion lines, it provides an extraordinarily close approximation of how photons are perceived by individuals with cone photopigment deficiencies.
Are my uploaded design files sent to any remote servers?
No. All image decoding, matrix pixel manipulation, and canvas rendering occur entirely inside your web browser’s local memory via HTML5 Canvas getImageData. No images, screenshots, or metadata are ever uploaded to any server.