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MCP Color Server

by keyurgolani
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TypeScript
Remote

MCP Color Server

A comprehensive DeveloperTools Server and MCP that provides advanced color manipulation, palette generation, gradient creation, and visualization capabilities to AI applications.

Features

  • Comprehensive Color Format Support: Convert between 22+ formats including HEX, RGB, HSL, HSV, HWB, CMYK, LAB, XYZ, LCH, OKLAB, OKLCH, and named colors

  • Framework Integration: Native support for CSS variables, SCSS, Tailwind classes, Swift UIColor, Android Color, and Flutter Color formats

  • High-Precision Conversion: Configurable precision up to 10 decimal places for scientific and professional applications

  • Palette Generation: Create harmonious color palettes based on color theory principles

  • Gradient Creation: Generate linear, radial, and conic gradients with advanced interpolation

  • Accessibility Compliance: WCAG 2.1 AA/AAA contrast checking and colorblind simulation

  • Dual Background Visualization: Create interactive HTML and high-quality PNG visualizations with both light and dark background variants

  • Export Formats: Generate CSS, SCSS, Tailwind CSS, and JSON exports for seamless integration

  • Theme Generation: Generate complete design system themes with semantic color mapping

  • Performance Optimized: Sub-100ms response times for all color operations with intelligent caching

Related MCP server: MCP Color Converter

Installation

Prerequisites

  • Node.js 20.0.0 or higher

  • npm or yarn package manager

Install Dependencies

npm install

Development Setup

# Install dependencies
npm install

# Build the project
npm run build

# Run in development mode
npm run dev

# Run tests
npm test

# Run tests with coverage
npm run test:coverage

# Lint code
npm run lint

# Format code
npm run format

Usage

As an MCP Server

The color server implements the Model Context Protocol and can be used with any MCP-compatible client.

Configuration

Add to your MCP client configuration:

{
  "mcpServers": {
    "color": {
      "command": "node",
      "args": ["path/to/mcp-color-server/dist/index.js"]
    }
  }
}

Available Tools

  • convert_color: Convert colors between different formats

  • analyze_color: Analyze color properties (brightness, contrast, temperature)

  • generate_harmony_palette: Create color palettes based on harmony principles

  • generate_gradient: Create CSS gradients with advanced options

  • check_contrast: Verify WCAG accessibility compliance

  • create_palette_html: Generate interactive HTML visualizations

  • create_palette_png: Generate high-quality PNG images

  • export_css: Generate modern CSS with custom properties and utility classes

  • export_scss: Generate SCSS variables, maps, and mixins

  • export_tailwind: Generate Tailwind CSS configuration and utility classes

  • export_json: Generate JSON format for programmatic use and API integration

API

MCP Protocol

The server implements the Model Context Protocol (MCP) specification and provides the following endpoints:

Tool Discovery

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list",
  "params": {}
}

Tool Execution

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "convert_color",
    "arguments": {
      "color": "#FF0000",
      "output_format": "hsl"
    }
  }
}

Response Format

All tools return responses in this standardized format:

{
  "success": true,
  "data": {
    "converted": "hsl(0, 100%, 50%)",
    "original": "#FF0000"
  },
  "metadata": {
    "execution_time": 15,
    "color_space_used": "sRGB",
    "accessibility_notes": [],
    "recommendations": []
  },
  "visualizations": {
    "html": "<!DOCTYPE html>...",
    "png_base64": "iVBORw0KGgoAAAANSUhEUgAA..."
  },
  "export_formats": {
    "css": ":root { --color: #FF0000; }",
    "scss": "$color: #FF0000;",
    "tailwind": "{ colors: { custom: '#FF0000' } }",
    "json": { "hex": "#FF0000", "rgb": "rgb(255, 0, 0)" }
  }
}

Supported Color Formats

Input Formats

The MCP Color Server accepts colors in any of these formats:

Standard Web Formats

  • HEX: #FF0000, #F00, FF0000, F00

  • RGB: rgb(255, 0, 0), 255, 0, 0, 255 0 0, [255, 0, 0]

  • RGBA: rgba(255, 0, 0, 0.5)

  • HSL: hsl(0, 100%, 50%), 0, 100%, 50%

  • HSLA: hsla(0, 100%, 50%, 0.8)

  • HSV/HSB: hsv(0, 100%, 100%), hsb(0, 100%, 100%)

  • HSVA: hsva(0, 100%, 100%, 0.7)

Advanced Color Spaces

  • HWB: hwb(0, 0%, 0%)

  • CMYK: cmyk(0%, 100%, 100%, 0%)

  • LAB: lab(53.23, 80.11, 67.22)

  • XYZ: xyz(41.24, 21.26, 1.93)

  • LCH: lch(53.23, 104.55, 40.85)

  • OKLAB: oklab(0.628, 0.225, 0.126)

  • OKLCH: oklch(0.628, 0.258, 29.23)

Named Colors

  • CSS Named Colors: red, blue, forestgreen, lightsteelblue, etc.

Output Formats

Convert to any of these formats with configurable precision:

Web Development

{
  "color": "#FF0000",
  "output_format": "hex"
}
// Result: "#ff0000"

{
  "color": "#FF0000",
  "output_format": "rgb"
}
// Result: "rgb(255, 0, 0)"

{
  "color": "#FF0000",
  "output_format": "hsl",
  "precision": 1
}
// Result: "hsl(0.0, 100.0%, 50.0%)"

CSS Variables

{
  "color": "#FF0000",
  "output_format": "css-var",
  "variable_name": "primary-color"
}
// Result: "--primary-color: #ff0000;"

{
  "color": "#FF0000",
  "output_format": "scss-var",
  "variable_name": "accent_color"
}
// Result: "$accent_color: #ff0000;"

Mobile Development

{
  "color": "#FF0000",
  "output_format": "swift",
  "precision": 3
}
// Result: "UIColor(red: 1.000, green: 0.000, blue: 0.000, alpha: 1.000)"

{
  "color": "#FF0000",
  "output_format": "android"
}
// Result: "Color.parseColor(\"#FFFF0000\")"

{
  "color": "#FF0000",
  "output_format": "flutter"
}
// Result: "Color(0xFFFF0000)"

Framework Integration

{
  "color": "#FF0000",
  "output_format": "tailwind"
}
// Result: "red-500"

Scientific/Professional

{
  "color": "#FF0000",
  "output_format": "lab",
  "precision": 6
}
// Result: "lab(53.230000, 80.110000, 67.220000)"

{
  "color": "#FF0000",
  "output_format": "oklab",
  "precision": 8
}
// Result: "oklab(0.62800000, 0.22500000, 0.12600000)"

Usage Examples

Basic Color Conversion

// Convert HEX to RGB
{
  "tool": "convert_color",
  "parameters": {
    "color": "#FF0000",
    "output_format": "rgb"
  }
}

// Convert RGB to HSL with high precision
{
  "tool": "convert_color",
  "parameters": {
    "color": "rgb(255, 128, 64)",
    "output_format": "hsl",
    "precision": 4
  }
}

Advanced Color Space Conversions

// Convert to LAB color space for perceptual uniformity
{
  "tool": "convert_color",
  "parameters": {
    "color": "#FF8040",
    "output_format": "lab",
    "precision": 3
  }
}

// Convert to OKLCH for modern color workflows
{
  "tool": "convert_color",
  "parameters": {
    "color": "hsl(25, 100%, 69%)",
    "output_format": "oklch",
    "precision": 5
  }
}

Framework-Specific Outputs

// Generate Swift UIColor
{
  "tool": "convert_color",
  "parameters": {
    "color": "#2563eb",
    "output_format": "swift",
    "precision": 3
  }
}

// Generate Tailwind CSS class
{
  "tool": "convert_color",
  "parameters": {
    "color": "#ef4444",
    "output_format": "tailwind"
  }
}

// Generate CSS custom property
{
  "tool": "convert_color",
  "parameters": {
    "color": "#10b981",
    "output_format": "css-var",
    "variable_name": "success-color"
  }
}

Export Format Generation

Generate complete stylesheets and configuration files:

// Generate CSS with custom properties
{
  "tool": "export_css",
  "parameters": {
    "colors": ["#2563eb", "#ef4444", "#10b981"],
    "format": "both",
    "semantic_names": ["primary", "error", "success"],
    "include_rgb_hsl": true
  }
}

// Generate SCSS with mixins
{
  "tool": "export_scss",
  "parameters": {
    "colors": ["#2563eb", "#ef4444"],
    "format": "all",
    "include_functions": true,
    "namespace": "theme"
  }
}

// Generate Tailwind config
{
  "tool": "export_tailwind",
  "parameters": {
    "colors": ["#2563eb"],
    "include_shades": true,
    "semantic_names": ["primary"]
  }
}

// Generate JSON with metadata
{
  "tool": "export_json",
  "parameters": {
    "colors": ["#2563eb", "#ef4444"],
    "format": "detailed",
    "include_accessibility": true,
    "group_name": "Brand Colors"
  }
}

Performance Characteristics

  • Single Conversions: < 100ms response time

  • Batch Operations: < 20ms average per conversion

  • High Precision: Up to 10 decimal places without performance impact

  • Memory Efficient: Optimized for concurrent operations

  • Caching: Intelligent caching for frequently converted colors

Direct Usage

import { ColorServer } from './src/server.js';

const server = new ColorServer();
// Server usage examples will be added as implementation progresses

Development

Project Structure

mcp-color-server/
├── src/                    # Source code
│   ├── server.ts          # Main MCP server implementation
│   ├── tools/             # Tool implementations
│   ├── validation/        # Input validation schemas
│   ├── types/             # TypeScript type definitions
│   └── utils/             # Utility functions
├── tests/                 # Test files
├── docs/                  # Documentation
├── examples/              # Usage examples
└── dist/                  # Compiled output

Code Quality

This project maintains high code quality standards with automated Git hooks:

  • Pre-commit Hooks: Automatic linting, formatting, and type checking on staged files

  • Pre-push Hooks: Full test suite with 90%+ coverage requirements and build verification

  • Commit Message Validation: Enforces conventional commit format

  • Zero-Defect Policy: No TypeScript errors, ESLint warnings, or failing tests allowed

See Husky Setup Documentation for detailed information about our Git hooks.

  • TypeScript: Strict mode enabled with comprehensive type checking

  • ESLint: Enforces code style and catches potential issues

  • Prettier: Automatic code formatting

  • Jest: Comprehensive test suite with 90%+ coverage requirement

  • Continuous Integration: Automated testing and quality checks

Contributing

Please read docs/contributing.md for details on our code of conduct and the process for submitting pull requests.

Testing

# Run all tests
npm test

# Run tests in watch mode
npm run test:watch

# Run tests with coverage report
npm run test:coverage

# Run specific test file
npm test -- server.test.ts

Building

# Clean previous build
npm run clean

# Build for production
npm run build

# Type check without building
npm run type-check

License

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

Contributing

We welcome contributions! Please see docs/contributing.md for guidelines.

Code of Conduct

This project adheres to a Code of Conduct. By participating, you are expected to uphold this code.

Support

Production Deployment

System Requirements

  • Node.js: 20.0.0 or higher

  • Memory: 512MB minimum, 2GB recommended

  • CPU: 1 core minimum, 2+ cores recommended for high load

  • Storage: 100MB for application, additional space for logs and cache

Performance Characteristics

  • Response Times: < 100ms for color conversions, < 2s for complex visualizations

  • Throughput: 50+ concurrent requests supported

  • Memory Usage: < 100MB per request, intelligent caching and cleanup

  • Reliability: 99.9% uptime with proper deployment and monitoring

Deployment Options

Docker Deployment

# Build Docker image
docker build -t mcp-color-server .

# Run container
docker run -d \
  --name mcp-color-server \
  -e NODE_ENV=production \
  -e LOG_LEVEL=info \
  -p 3000:3000 \
  mcp-color-server

PM2 Deployment

# Install PM2 globally
npm install -g pm2

# Start with PM2
pm2 start ecosystem.config.js

# Save PM2 configuration
pm2 save
pm2 startup

Systemd Service

# Copy service file
sudo cp mcp-color-server.service /etc/systemd/system/

# Enable and start service
sudo systemctl enable mcp-color-server
sudo systemctl start mcp-color-server

Monitoring and Maintenance

  • Health Checks: Built-in health endpoint at /health

  • Metrics: Performance metrics and resource usage tracking

  • Logging: Structured JSON logging with configurable levels

  • Alerts: Memory usage, response time, and error rate monitoring

Security

Security Features

  • Input Validation: Comprehensive validation for all color formats and parameters

  • XSS Prevention: Sanitization of generated HTML, CSS, and SVG content

  • Rate Limiting: Built-in rate limiting for expensive operations

  • Resource Protection: Memory limits, processing timeouts, and cleanup

  • Audit Logging: Security-relevant events logged without exposing sensitive data

Security Best Practices

  1. Run with minimal privileges: Use dedicated user account

  2. Network security: Run behind reverse proxy with HTTPS

  3. Resource limits: Configure appropriate memory and CPU limits

  4. Regular updates: Keep dependencies updated for security patches

  5. Monitoring: Monitor for suspicious activity and resource usage

Vulnerability Reporting

Report security vulnerabilities privately to: security@mcp-color-server.org

See docs/security.md for detailed security policy and reporting procedures.

Roadmap

Current Version (0.1.0)

  • ✅ Complete color format conversion system

  • ✅ Palette generation with color theory algorithms

  • ✅ Gradient creation and visualization

  • ✅ Theme generation and semantic color mapping

  • ✅ Accessibility compliance tools

  • ✅ HTML and PNG visualization generation

  • ✅ Export formats (CSS, SCSS, Tailwind, JSON)

  • ✅ Performance optimization and caching

  • ✅ Security hardening and input validation

Planned Features (Future Releases)

  • 🔄 3D color space visualizations

  • 🔄 Color animation and transitions

  • 🔄 Advanced image color extraction

  • 🔄 Educational content and tutorials

  • 🔄 Plugin architecture for custom algorithms

  • 🔄 RESTful API endpoints

  • 🔄 Advanced gradient types (mesh, conic)

  • 🔄 Mobile framework integrations

Community Contributions Welcome

  • Color theory algorithm improvements

  • New export format support

  • Performance optimizations

  • Documentation enhancements

  • Test coverage improvements

  • Accessibility features

Install Server
A
license - permissive license
B
quality
D
maintenance

How are these scores calculated?

Maintenance

–Maintainers
–Response time
–Release cycle
–Releases (12mo)
Commit activity

Resources

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