Changelog
What's new in Kulr
Kulr gets better because people keep using it. Here's everything that changed — and if there's something you'd like next, tell us.
Kulr 2.0
The biggest update since launch — built for everyone who keeps coming back. Everything is still free, still private, and still needs no account.
New tools
Theme Builder
Turn one brand color into a complete design system: perceptual 50–950 scales, semantic tokens for light and dark mode, automatic contrast fixes, and one-click export to Tailwind v4, shadcn/ui, CSS variables or design tokens.
Build a theme →My Library
Your saved palettes now have real names, collections, tags and pins. Back up your whole library to a file and restore it on any device — no sign-up required.
Open your library →⌘K search
Press ⌘K (Ctrl K on Windows) or / on any page to jump to any tool, named color, brand or curated palette. Paste a hex code to build a palette, a theme or a contrast check from it instantly.
Generator
Smarter palettes
Generation now balances light and dark tones and picks a harmony strategy each time, so palettes feel designed rather than random. Harmony modes respect your locked colors.
Pick up where you left off
Your current palette and locks are remembered between visits, and the URL always reflects the palette on screen — refresh or share any time.
Fine-tune and reorder
Drag columns to reorder, open a per-color editor with sliders, see AA contrast at a glance, and browse your session history.
More exports
Tailwind v4 @theme, design tokens JSON, SwiftUI, Android XML and a real PNG swatch sheet join CSS, SCSS, JSON and SVG.
Every shortcut
Press ? to see them all.
Tools
Contrast checker
APCA alongside WCAG 2, a palette-wide contrast matrix, and suggestions that find the closest passing color instead of the darkest.
Image extractor
Deterministic, more accurate extraction ranked by how much of the image each color covers. Paste an image straight from your clipboard.
Gradients, picker, converter
Gradient presets and smooth OKLCH blending, a sharper keyboard-accessible picker, and OKLCH plus nearest-Tailwind output in the converter. Every tool now has shareable links.
Explore
Faster loading, search that works from the URL, save buttons on every card, and a new palette of the day.
Under the hood
Faster first load
Pages render instantly instead of fading in after scripts load, and no ad code is loaded on any page.
Accessibility
Higher-contrast text, keyboard-operable menus and sliders, screen-reader labels throughout, and respect for your reduced-motion setting.
Follows your system theme
Kulr now matches your device's light or dark mode until you choose one.
Kulr launches
A free, no-sign-up color toolkit: palette generator, explorer, image extractor, contrast checker, gradient builder, UI visualizer, picker, converter, Tailwind colors, brand palettes and guides.