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x402.forgemesh.io contrast-color-checker
https://x402.forgemesh.io/contrast-color-checker
payable
Contrast and dark-mode checker for any hex or rgb() input: returns whether a color reads as light or dark and which text color, black or white, stays legible on top of it, alongside full hex/RGB/HSL conversions. Useful for accessible UI generation, theme switchers, and design-system tooling that can't afford a manual eyeball check.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.001
- Network
- base
- Pay to
- 0x850363a27F0aC6fEb9C7a3eC4C1d295262dF9432
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 38 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-10T09:17:30.818Z (1d ago)
- Category
- other
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402.forgemesh.io%2Fcontrast-color-checker"