Color contrast check (WCAG)
Color contrast check (WCAG). WCAG 2 contrast ratio between a text colour and a background colour, with pass/fail for AA and AAA at normal and large text sizes. Use to check that a design is readable.
Answeringour last check, 2026-10-24
1 of 1checks answered this week
42 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://agent-data-tools.revmesh2074.workers.dev/color/contrast
| Category | Everything else |
|---|---|
| Provider host | agent-data-tools.revmesh2074.workers.dev |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 4 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-24 | valid payment request | 402 | $0.01 | 42 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"bg": "#ffffff",
"fg": "#767676"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"bg": {
"description": "Background colour",
"examples": [
"#ffffff"
],
"type": "string"
},
"fg": {
"description": "Text colour",
"examples": [
"#767676"
],
"type": "string"
}
},
"required": [
"fg",
"bg"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"aaLarge": {
"type": "boolean"
},
"aaNormal": {
"type": "boolean"
},
"aaaLarge": {
"type": "boolean"
},
"aaaNormal": {
"type": "boolean"
},
"ratio": {
"type": "number"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}