A11y Contrast

Last 30 days

Uptime

100%

Response time

284 ms typical, 284 ms slowest 5%

Last check

3 h ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://api.webbersites.com/api/a11y/contrast?bg=%23ffffff&fg=%23767676"

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.03:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.webbersites.com%2Fapi%2Fa11y%2Fcontrast
const res = await pay("https://api.webbersites.com/api/a11y/contrast?bg=%23ffffff&fg=%23767676");
console.log(await res.json());

Example input

{
  "bg": "#ffffff",
  "fg": "#767676"
}

Example output

{
  "background": "#ffffff",
  "contrast_ratio": 4.54,
  "foreground": "#767676",
  "passes": {
    "large_text": {
      "AA": true,
      "AAA": true
    },
    "normal_text": {
      "AA": true,
      "AAA": false
    }
  },
  "ratio_string": "4.54:1",
  "summary": "Good — passes AA for normal text and AAA for large text."
}

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