Chromatic Lab

Color palette generator and color tools

Split complementary3 of 10 pairs pass AA
Open in generator

Press Space for a new palette. Tap a color to copy it, or the lock to keep it.

Press Space for a new palette, lock the colors you want to keep and see WCAG contrast for every pair. Then convert, check and export without leaving the page. HueKit is free and runs entirely in your browser. Nothing you type is ever uploaded.

6 generators and checkers16 converters254 named colors0 sign-ups

Built for speed

Every tool runs client side, so results appear the instant you type. No round trips, no spinners, no waiting.

Private by design

Your colors and images are processed in your browser and never leave your device. There is no account and nothing to sign up for.

Copy ready output

Every value and every snippet has a copy button, formatted the way you would paste it straight into CSS.

A color toolkit that stays out of your way

HueKit started from a simple frustration: the small color jobs that interrupt real work. You need five colors that belong together and still pass contrast. You have a hex code and need RGB for a canvas call. You want a soft, layered shadow without hand tuning six numbers. Each of those is a thirty second task, and each one usually means hunting down yet another slow, cluttered single-purpose site. HueKit collects those jobs into one fast, focused lab.

The flagship is the color palette generator. It builds palettes in OKLCH, so equal steps in lightness look equal, lets you lock the colors you want to keep, and shows the WCAG contrast of every pair with a one-click fix for pairs that fall short. The rules behind it are written out on the methodology page. Have a photo instead? The palette from image tool pulls the colors out of it on your device.

For single values, the hex to RGB converter and its reverse, RGB to hex, cover the most common conversions in front end work, and the full converter opens up HSL, HSV, CMYK and OKLCH. On the CSS side, the box shadow generator, gradient generator and glassmorphism generator all produce copy ready code with a live preview.

Accessibility is a first class citizen here, not an afterthought. The contrast checker grades any text and background pair against the WCAG AA and AAA thresholds, so you can catch a failing combination before it reaches a user. And when you need inspiration, the color library gives you 254 named colors, each with a full breakdown and suggested pairings.