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Color Blind Simulation for Hex Colors
x402
Color Blind Simulation for Hex Colors is a paid API for AI agents from color-design.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Simulates protanopia, deuteranopia, and tritanopia color blindness on a hex color or a foreground/background pair, returning the transformed colors and remaining contrast ratios.
Price / call$0.02
Success—
StatusUnknown
How this service works
Simulate protanopia, deuteranopia and tritanopia on a color, or on a text/background pair with the contrast that remains.
Output
Returns an object with the original color and background, simulated hex colors for protanopia, deuteranopia, and tritanopia, the contrast ratio for each simulation and for normal vision, a verdict or summary on accessibility, and any disclaimer or reasons if checks could not be completed.
Example use cases
Brand color accessibility audit
“My brand's primary color is #0057B7. Can you show me what it looks like to users with protanopia, deuteranopia, and tritanopia? I need the simulated hex values and any contrast info.”
UI text legibility for color blind users
“I have dark gray text #333333 on a light background #F5F5F5. Simulate all three types of color blindness and tell me the contrast ratios that remain — I want to make sure it's still readable.”
Design system color pair validation
“Before I finalize my design system, check how the foreground color #D62828 on background #FEFAE0 holds up for colorblind users. Show me the simulated colors and whether contrast degrades significantly.”
Technical details
Endpoint
GEThttps://color-design.x402tookit.com/color-blind-sim?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to evaluate how a specific hex color or color pair appears under the three major types of color blindness (protanopia, deuteranopia, tritanopia) and want quantified contrast ratios — particularly useful for UI accessibility audits, brand color vetting, or WCAG compliance workflows. Prefer this over generic accessibility checkers when you need the simulated hex values themselves (not just a pass/fail), or when you need all three color blindness types evaluated in a single call.
Side effects
- Missing required 'color' query parameter returns an error
- Invalid hex format (e.g. missing '#', wrong length) may cause a parsing error or unexpected results
- Background parameter provided without '#' prefix may fail validation
- Network or payment failure returns a 402 or 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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