utilpeek (Tanod) color conversion (hex, RGB, HSL, HSV, CMYK, OKLCH) and WCAG 2.x
utilpeek (Tanod) color conversion (hex, RGB, HSL, HSV, CMYK, OKLCH) and WCAG 2.x contrast check (AA / AAA).
Answeringour last check, 2026-10-10
1 of 1checks answered this week
221 msmedian answer time
$0.001listed price per call
$0.001price 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
POST https://tanod.dev/v1/color/convert
| Category | Everything else |
|---|---|
| Provider host | tanod.dev |
| Networks | eip155:137, eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.001 | 221 ms |
Example input (from the provider)
{
"body": {
"background": "white",
"color": "#777"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"background": {
"anyOf": [
{
"maxLength": 64,
"minLength": 1,
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Optional second color (e.g. the background): adds the WCAG 2.x contrast ratio and AA / AAA pass / fail."
},
"color": {
"description": "A CSS color: hex (#rgb, #rgba, #rrggbb, #rrggbbaa), rgb() / rgba(), hsl() / hsla() or a CSS color name (148 names, plus transparent).",
"maxLength": 64,
"minLength": 1,
"type": "string"
}
},
"required": [
"color"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"background": {
"properties": {
"alpha": {
"type": "number"
},
"cmyk": {
"properties": {
"c": {
"type": "number"
},
"k": {
"type": "number"
},
"m": {
"type": "number"
},
"note": {
"type": "string"
},
"y": {
"type": "number"
}
},
"type": "object"
},
"hex": {
"type": "string"
},
"hex8": {
"type": "string"
},
"hsl": {
"properties": {
"css": {
"type": "string"
},
"h": {
"type": "number"
},
"l": {
"type": "number"
},
"s": {
"type": "number"
}
},
"type": "object"
},
"hsv": {
"properties": {
"h": {
"type": "number"
},
"s": {
"type": "number"
},
"v": {
"type": "number"
}
},
"type": "object"
},
"names": {
"items": {
"type": "string"
},
"type": "array"
},
"oklch": {
"properties": {
"c": {
"type": "number"
},
"css": {
"type": "string"
},
"h": {
"type": [
"number",
"null"
]
},
"l": {
"type": "number"
}
},
"type": "object"
},
"relative_luminance": {
"type": "number"
},
"rgb": {
"properties": {
"b": {
"type": "integer"
},
"css": {
"type": "string"
},
"g": {
"type": "integer"
},
"r": {
"type": "integer"
}
},
"type": "object"
}
},
"type": "object"
},
"color": {
"properties": {
"alpha": {
"type": "number"
},
"cmyk": {
"properties": {
"c": {
"type": "number"
},
"k": {
"type": "number"
},
"m": {
"type": "number"
},
"note": {
"type": "string"
},
"y": {
"type": "number"
}
},
"type": "object"
},
"hex": {
"type": "string"
},
"hex8": {
"type": "string"
},
"hsl": {
"properties": {
"css": {
"type": "string"
},
"h": {
"type": "number"
},
"l": {