# Color Inverter API

> For the complete documentation index, see [llms.txt](/llms.txt).

Invert a hex colour and report luminance plus a readable text colour.

Use this endpoint to add the tool to your app, site, workflow, or agent without rebuilding formulas, validation, examples, and docs.

- Slug: `color-inverter`
- Category: `developer`
- Version: `2026-04-22`
- Credits per successful call: 1
- Starts on: free
- Max payload: 65536 bytes
- Privacy mode: `hash_only`
- Available on: free, starter, pro, business, scale
- Browser tool: https://miniwebtool.com/color-inverter/

## Endpoint

`POST https://api.miniwebtool.com/v1/tools/color-inverter/run`

## Request body

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `color` | `str` | no |  |

## Example request

```json
{
  "color": "#3b82f6"
}
```

## cURL

```bash
curl -X POST https://api.miniwebtool.com/v1/tools/color-inverter/run \
  -H 'Authorization: Bearer mwt_live_YOUR_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"color":"#3b82f6"}'
```

## Response envelope

```json
{
  "request_id": "01K...",
  "tool": "color-inverter",
  "tool_version": "2026-04-22",
  "credits_used": 1,
  "result": {}
}
```

## Errors

Errors are RFC 7807 `application/problem+json`. Branch on `code`, not `title`.

## MCP

Agents can discover and call this tool through `https://api.miniwebtool.com/mcp` or `https://api.miniwebtool.com/v1/mcp` using MCP `tools/list` and `tools/call`.

## Frequently asked

### What does the Color Inverter API do?

Invert a hex colour and report luminance plus a readable text colour. Use it to add this utility without rebuilding formulas, validation, examples, and documentation.

### How much does one call cost?

1 credit per successful call. Failed calls do not bill.

### What parameters are required?

Required fields: (none). Full schema at `https://api.miniwebtool.com/v1/openapi.json`.

### Is this deterministic?

Yes. Same input, same output. Tool version: 2026-04-22.