{"uid":"cap_5RCLJrwOTZF6MQQxnHvw4","slug":"color-toolkit-nearest-named-color-3136c144","name":"Color Toolkit – Nearest Named Color","description":"Find the nearest CSS named color to a given color, by perceptual distance.","url":"https://color.openverbs.com/v1/nearest-named","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":["color"],"properties":{"color":{"type":"string","maxLength":128,"minLength":1,"description":"Any CSS color."}},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wH6j7dvSWacyvtxo1fNlT","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Takes any CSS color value as input and returns the closest matching named color","exampleAgentPrompt":"What's the nearest named CSS color to #3a7bd5?","exampleUseCases":[{"title":"Brand color to human-readable name","prompt":"I have a brand color #FF6B35 — what's the closest standard CSS named color to it?"},{"title":"Design system color labeling","prompt":"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."},{"title":"Accessibility audit color naming","prompt":"I'm auditing a website and need to describe colors in plain English — what's the nearest named color to hsl(210, 70%, 45%)?"}],"resultDescription":"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","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:34:22.267Z","isFirstParty":false}