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MCP Color Server

by keyurgolani
OverviewInspectSchemaRelated ServersScoreDiscussions
TypeScript
Remote
MIT License

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

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

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