Color Brightness Calculator is a tool for calculating color brightness and luminance. It determines if a color is light or dark using WCAG 2.0 standards and provides contrast ratios for accessibility compliance.

The Color Brightness Calculator API provides a simple, reliable way to integrate color brightness calculator functionality into your applications. Built for developers who need production-ready color brightness calculator capabilities without the complexity of building from scratch.

View API Details →

Available on:

async function callColorBrightnessCalculatorAPI() {
    try {
        const params = new URLSearchParams({
            hex: 'FF5733'
        });

        const response = await fetch(`https://api.apiverve.com/v1/colorbrightness?${params}`, {
            method: 'GET',
            headers: {
                'x-api-key': 'YOUR_API_KEY_HERE'
            }
        });

        const data = await response.json();
        console.log(data);
    } catch (error) {
        console.error('Error:', error);
    }
}

callColorBrightnessCalculatorAPI();

curl -X GET "https://api.apiverve.com/v1/colorbrightness?hex=FF5733" \
  -H "x-api-key: YOUR_API_KEY_HERE"

Get your API key: https://apiverve.com

📁 For more examples, see the examples folder

Choose your preferred programming language:

npm install @apiverve/colorbrightness

View NPM Package → | Package Code →

dotnet add package APIVerve.API.ColorBrightnessCalculator

View NuGet Package → | Package Code →

pip install apiverve-colorbrightness

View PyPI Package → | Package Code →

gem install apiverve_colorbrightness

View RubyGems Package → | Package Code →

composer require apiverve/colorbrightness

View Packagist Package → | Package Code →

dart pub add apiverve_colorbrightness

View pub.dev Package → | Package Code →

implementation 'com.github.apiverve:colorbrightness-api:1.0.0'

Package Code →

go get github.com/apiverve/colorbrightness-api/go

Package Code →

• 🏠 API Home: Color Brightness Calculator API
• 📚 API Reference: docs.apiverve.com/ref/colorbrightness
• 📖 OpenAPI Spec: openapi.yaml
• 💡 Examples: examples/

The Color Brightness Calculator API is commonly used for:

• Web Applications - Add color brightness calculator features to your frontend or backend
• Mobile Apps - Native SDKs for Android development
• Automation - Integrate with n8n, Zapier, or custom workflows
• SaaS Products - Enhance your product with color brightness calculator capabilities
• Data Pipelines - Process and analyze data at scale

All requests require an API key in the header:

x-api-key: YOUR_API_KEY_HERE

Get your API key: https://apiverve.com

Every APIVerve endpoint returns the same envelope — check status, then read data:

{
  "status": "ok",
  "error": null,
  "data": { ... }
}

A real response from the Color Brightness Calculator API:

{
  "status": "ok",
  "error": null,
  "data": {
    "hex": "#FF5733",
    "rgb": {
      "r": 255,
      "g": 87,
      "b": 51
    },
    "luminance": 0.2832,
    "perceived_brightness": 131,
    "yiq": 133.13,
    "is_light": false,
    "is_dark": true,
    "brightness_category": "dark",
    "recommended_text_color": "#FFFFFF",
    "contrast_ratio_with_white": 3.15,
    "contrast_ratio_with_black": 6.66,
    "wcag_aa_compliant_with_white": false,
    "wcag_aa_compliant_with_black": true,
    "wcag_aaa_compliant_with_white": false,
    "wcag_aaa_compliant_with_black": false
  }
}

• 🏠 API Home: Color Brightness Calculator API
• 💬 Support: https://apiverve.com/contact
• 🐛 Issues: GitHub Issues
• 📖 Documentation: https://docs.apiverve.com
• 🌐 Website: https://apiverve.com

We welcome contributions! Please see CONTRIBUTING.md for guidelines.

For security concerns, please review our Security Policy.

This project is licensed under the MIT License - see the LICENSE file for details.

Built with ❤️ by APIVerve

Copyright © 2026 APIVerve. All rights reserved.