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dt0ur.online Color Converter & WCAG Contrast Checker
x402
dt0ur.online Color Converter & WCAG Contrast Checker is a paid API for AI agents from dt0ur.online, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).
Converts a color between HEX, RGB, and HSL formats and optionally computes the WCAG contrast ratio against a second color.
Price / call$0.01
Success—
StatusUnknown
How this service works
Converts a color between HEX, RGB, and HSL, and optionally computes the WCAG contrast ratio against a second color.
Output
Returns the input color expressed in all three formats (HEX, RGB, and HSL). If a second color is provided via the 'against' parameter, also returns the WCAG contrast ratio (a numeric value from 1 to 21) between the two colors, enabling accessibility compliance checks.
Example use cases
Accessibility check for brand colors
“I'm using #1a1a2e as my text color on a #f0f0f0 background — can you tell me the WCAG contrast ratio and whether it passes accessibility standards?”
CSS color format conversion
“Convert rgb(255, 87, 51) to both hex and HSL so I can use it consistently across my CSS stylesheets.”
Design token audit
“Take the color hsl(210, 100%, 56%) and give me its hex and RGB equivalents, and also check the contrast ratio against pure black (#000000).”
Technical details
Endpoint
POSThttps://dt0ur.online/api/utility/color-convert?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need programmatic color format conversion across HEX, RGB, and HSL in a single call, especially when you also need WCAG contrast ratio computation for accessibility compliance. It is ideal for design automation pipelines, UI component auditing, and accessibility validation tasks where you need both format conversion and contrast checking without calling separate services.
Side effects
- Invalid color string format returns an error (e.g. malformed hex or out-of-range RGB values)
- Missing required 'color' field returns a 400-level error
- WCAG contrast ratio not computed if 'against' field is absent
- Network timeouts or service unavailability return 5xx errors
- Payment failure via x402 protocol results in 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| color | string | Hex (#rrggbb), rgb(r,g,b), or hsl(h,s%,l%) color |
| against | string | Optional second color to compute WCAG contrast ratio against |
Tags
x402
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