Generate complete website color themes from a single primary color. Get CSS custom properties with live UI component preview for buttons, cards, and more. Free online color theme generator.
Generate complete website color themes from a single primary color. Get CSS custom properties with live UI component preview for buttons, cards, and more. Free online color theme generator. Color Theme Generator is a powerful, free online tool built for UI/UX designers, web developers, and creative professionals. It's part of ToolHaven's Design Tools collection — a suite of browser-based utilities designed to help you work faster without compromising your privacy.
Unlike cloud-based alternatives, Color Theme Generator processes everything locally on your device. Your data never leaves your browser — making it ideal for sensitive or confidential work. There are no file size limits imposed by server bandwidth, and results appear instantly without network delays.
Whether you need to color, theme, css, website, palette, Color Theme Generator handles it with ease. No account required, no software to install — just open the tool in any modern browser (Chrome, Firefox, Safari, Edge) on desktop, tablet, or mobile and start working immediately.
Open Color Theme Generator and adjust the controls using sliders and pickers. Generate complete website color themes from a single primary color. The preview updates in real time as you make changes.
Watch Color Theme Generator's live preview as you make changes. Every adjustment updates the output immediately so you can iterate quickly.
Copy the CSS or design output from Color Theme Generator. Paste it directly into your stylesheet or design system — it's production-ready.
Stick to a 4 or 8-px spacing grid — eyeballing kills consistency.
Use HSL (not hex) when generating palettes; it makes lightness adjustments trivial.
Test colors against WCAG AA contrast (4.5:1) before shipping any text.
Generate complete website color themes from a single primary color. Get CSS custom properties with live UI component preview for buttons, cards, and more. Free online color theme generator. Color Theme Generator runs entirely in your browser using JavaScript — your data is never uploaded to any server. The processing happens locally on your device, which means it's both fast and private.
Yes, Color Theme Generator is 100% free with no hidden costs. There's no login required, no account to create, no trial period, and no premium tier. You can use it as many times as you want.
Absolutely. Color Theme Generator processes everything locally in your browser. Your data never leaves your device — we have no server that could receive or store it. You can verify this by checking the Network tab in your browser's Developer Tools (F12) while using the tool.
Yes, any output generated by Color Theme Generator is yours to use however you like — personal projects, commercial work, client deliverables, or anything else. We claim no ownership over anything you create with our tools.
No installation needed. Color Theme Generator runs directly in your web browser — Chrome, Firefox, Safari, Edge, or any modern browser. Just open the page and start using it immediately. There's nothing to download, install, or update.
