About OpenPalette
An open-source, local-first color workspace for designers and developers. Everything runs in your browser — no accounts, no tracking, no cloud.
What is OpenPalette?
OpenPalette is a color workspace. Generate palettes, build token scales, check accessibility, extract colors from images, create gradients, and preview color systems on real UI templates — all inside a single, shared workspace that runs entirely in your browser.
Every computation happens locally on your device. Palette generation, color math, contrast ratios, vision simulations, export rendering — none of it touches a server. Your data stays in localStorage, on your machine.
Why it exists
Most color tools require accounts, subscriptions, or cloud connections. OpenPalette was built to address four motivations:
- Privacy. Your color data should never leave your machine. No accounts, no telemetry, no cloud dependency.
- Permanence. A tool that doesn't require a subscription or a live server will work as long as you have a browser. Local-first means permanent access.
- Openness. The source code is MIT-licensed and available on GitHub. Anyone can inspect, fork, or contribute. There is no paid tier — the entire application is free.
- Professional workflows. Designers and developers need production-ready exports — CSS variables, Tailwind configs, JSON tokens, accessibility reports. OpenPalette ships them all.
Design Philosophy
Local-First
Zero server dependencies. Palette generation, color math, and rendering all happen client-side. No data leaves your machine.
Open Source
MIT-licensed. The full source is on GitHub. No paywalls, no pro features, no usage limits.
Privacy by Design
No accounts, no tracking, no telemetry. The application is designed so that user data never needs to be collected.
Fast
No network requests for core functionality. Palette generation and rendering are instantaneous — limited only by your device.
Simple
One shared workspace. Nine integrated tools. No complex menus or configuration. Open the page and start creating.
Production-Ready
Exports target real shipping formats: CSS Variables, Tailwind, JSON Design Tokens, SCSS, Android XML, iOS Swift, and more.
Maintainable
TypeScript throughout. A clean palette engine separated from presentation. Tests for core color math. Designed to last.
Technical Foundation
Next.js
Static-site generation and React server components for fast initial loads. The app shell is pre-rendered; the workspace loads client-side.
TypeScript
The entire codebase is TypeScript — strict mode. Color engines, palette math, and export formatters are typed and tested.
Browser-First
All color computation uses browser APIs: Canvas for image extraction, Crypto for IDs, localStorage for persistence. No backend required.
Shared Workspace
A single palette context (`WorkspaceProvider`) connects all tools. Changes in Studio propagate to Visualizer, Contrast, Accessibility, and Export immediately.
Local Storage
Palettes, snapshots, recently generated and opened palettes persist in localStorage between sessions. No sync, no server, no accounts.
Responsive
The interface adapts from mobile to ultrawide. The toolbar, tab navigation, and section layouts reflow across breakpoints without hiding functionality.
About Kovina
OpenPalette is part of the Kovina ecosystem — a collection of free and open-source applications built around a shared philosophy: local-first, privacy-respecting, and professionally capable software that runs entirely in the browser.
kovina.org →Open Source
OpenPalette is MIT-licensed and fully open source. The complete source code is available on GitHub. Contributions, bug reports, and feature requests are welcome.