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Color Toolkit – Nearest Named Color
x402
Color Toolkit – Nearest Named Color is a paid API for AI agents from color.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Takes any CSS color value as input and returns the closest matching named color
Price / call$0.002
Success—
StatusUnknown
How this service works
Find the nearest CSS named color to a given color, by perceptual distance.
Output
Returns the nearest named CSS color to the input, including the color name and likely distance or similarity information indicating how close the match is
Example use cases
Brand color to human-readable name
“I have a brand color #FF6B35 — what's the closest standard CSS named color to it?”
Design system color labeling
“Can you tell me what named CSS color is closest to rgb(72, 199, 142)? I need a human-readable label for our design system docs.”
Accessibility audit color naming
“I'm auditing a website and need to describe colors in plain English — what's the nearest named color to hsl(210, 70%, 45%)?”
Technical details
Endpoint
POSThttps://color.openverbs.com/v1/nearest-namedWhen to prefer
Use this endpoint when you need to map any arbitrary CSS color (hex, RGB, HSL, named, etc.) to its closest standard CSS named color — ideal for design systems, accessibility labeling, natural language color descriptions, or any workflow where human-readable color names are needed instead of numeric values.
Side effects
- Invalid or malformed CSS color string causes a 400 error
- Empty or missing color field in the request body returns a validation error
- Extremely unusual color formats not recognized as valid CSS may be rejected
- Service unavailable if upstream is down, returning 5xx errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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