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24K Labs Color Converter
x402
24K Labs Color Converter is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Converts a color between hex, RGB, HSL, HSV, and CMYK formats, and optionally computes the WCAG 2.1 contrast ratio and AA/AAA accessibility compliance against a second color.
Price / call$0.002
Success—
StatusUnknown
How this service works
Convert a color across hex/rgb/hsl/hsv/cmyk and (optionally) compute the WCAG contrast ratio and AA/AAA pass against a second color.
Output
Returns the input color expressed in all five formats (hex, RGB, HSL, HSV, CMYK). If a second color is provided, also returns the WCAG 2.1 contrast ratio as a numeric value and boolean pass/fail flags for AA (4.5:1) and AAA (7:1) thresholds.
Example use cases
Design system color normalization
“I have the hex color #FF6B6B and I need it expressed in RGB, HSL, HSV, and CMYK formats so I can use it across different tools in my design system.”
Accessibility audit for text on background
“Does my dark navy text (#1A1A2E) meet WCAG AA and AAA contrast requirements when used on a light gray background (#F5F5F5)?”
Cross-format color translation for brand guidelines
“Our brand color is hsl(210, 100%, 56%) — can you convert that to hex, RGB, HSV, and CMYK so we have all formats for the brand style guide?”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/color-convertWhen to prefer
Choose this endpoint when you need to translate a color across multiple color spaces in a single call, especially when you also want to check accessibility compliance (WCAG) against a second color simultaneously. It is more efficient than calling separate conversion and contrast endpoints. Prefer this over the sibling WCAG-only endpoint when you need the color format conversions as well as accessibility data.
Side effects
- Invalid color value format returns a 400 error
- Unsupported color space input returns a parsing error
- Malformed hex string (wrong length or invalid characters) causes a validation failure
- Missing required color input field returns a missing parameter error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| color | string | |
| against | string |
Output
Schema · Response
{
"type": "json",
"example": {
"hex": "#3366cc",
"rgb": [
51,
102,
204
]
}
}Tags
x402
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