Overview

Serialif Color is a free, no-auth API that converts colors between formats like HEX, RGB, and HSL. It also returns complementary colors, grayscale versions, and high-contrast text colors suitable for accessibility. Perfect for developers building color pickers, design tools, or UI themes without needing any credentials.

Beginner Tip

Just pass a color value in the URL path (e.g., /ffffff) and you get back a full JSON object with multiple color formats instantly. No API key or sign-up required.

Available Data

The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.

color hex codes and names
color palette data
RGB/HSL values

Example Response

Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.

JSON Response · Illustrative
{
  "status": "success",
  "data": {
    "result": "Data from Serialif Color",
    "description": "Color conversion, complementary, grayscale and contrasted text",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

base.hex The input color expressed as a HEX code
base.rgb RGB breakdown with r, g, b numeric values
complementary.hex The complementary (opposite on color wheel) color in HEX
grayscale.hex Grayscale version of the input color
contrasted_text.hex High-contrast text color (black or white) for use on the input color background

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

Request
const url = "https://color.serialif.com/ffffff";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.

404 Not Found Invalid or malformed color value in the URL path
Ensure the color is a valid 6-digit HEX code without the # symbol, e.g., /1a2b3c
Unexpected JSON format Requesting a color format the API does not recognize
Use plain 6-digit HEX strings in the path; check the API docs for supported input formats
Empty response Missing color value in the request path
Always include a color value directly in the URL path, e.g., https://color.serialif.com/ff6600

Metadata Score Breakdown

Estimated from metadata — endpoint not independently tested

This score is estimated from observable metadata — HTTPS support, authentication model, declared CORS, and documentation reachability — because the API requires authentication or exposes no publicly testable endpoint. The five-signal breakdown is only shown for live-tested APIs.

Metadata estimate · endpoint not independently tested

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS NO
Category Development
Difficulty Beginner
Listing details not endpoint-verified

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