Why Huelab exists
Color is the most powerful design tool. Yet most color tools online require you to upload files, create accounts, or rely on slow servers. Huelab challenges this.
We believe your creative work should stay on your device. Your image files should never leave your browser. Color math should be instant. Design should never ask you to sign up.
How Huelab works
Huelab runs entirely in your browser using modern web standards:
- Local processing: All color calculations, image sampling, and palette extraction happen on your device.
- No server dependency: Your images don't travel across the internet. They're never stored on our servers.
- No accounts: Start using Huelab immediately without signup, login, or email confirmation.
- Offline-ready: After the first load, most tools work offline.
- Open standards: HTML, CSS, JavaScript, and web APIs. No proprietary formats or locked-in ecosystems.
What you can do with Huelab
Huelab provides six categories of tools:
Pick & Inspect
Use Color Picker for any color. Pick exact pixels from images or your screen. Find color names instantly.
Convert
Convert between HEX, RGB, HSL, CMYK, LAB, LCH, and OKLCH. Fast, accurate, copy-ready. Includes HEX to RGB, and 13 other converters.
Create
Build palettes from a base color. Extract dominant colors from images. Design gradients. Generate random colors.
Accessibility
Check WCAG contrast ratios. Preview your design through color vision simulation. Build inclusive interfaces.
Analyze
Mix colors at precise percentages. Compare colors with numerical distance. Detect color formats automatically.
Developer Tools
Export design tokens as CSS, JSON, or TypeScript. Generate CSS gradients. Create CSS variables from palettes.
Privacy & transparency
We don't collect your images. We don't require signup. We don't use your files for training. Your color choices stay in your browser's local storage and can be cleared anytime.
Read our full privacy policy for details.
Design principles
Instant & responsive: Tools load fast and respond immediately as you type.
Useful, not clever: Every feature solves a real problem. No fake AI, no gimmicks.
Accessible: Works with keyboard navigation, screen readers, and multiple color spaces for different needs.
Mobile-first: Touch-friendly, thumb-accessible, full-featured on small screens.
Export-ready: Every result is copy-ready for CSS, JSON, Tailwind, or design tokens.
Built for the modern web
Huelab uses:
- Next.js 16 for fast, optimized static builds
- React 19 for interactive UI
- TypeScript for reliable color math
- Web Canvas API for image processing
- Native browser APIs for screen color picking
- IndexedDB for local color history
- Firebase for hosting and analytics
The future
We're constantly improving. Upcoming features include:
- Auto contrast fixing for accessibility
- Bulk color conversion
- Design token generator improvements
- Color space tutorials and guides
- Keyboard-only workflows
Get in touch
Have a feature request? Found a bug? Contact us anytime. Your feedback shapes Huelab.