Read the launch blog post for full details on how this works.

Set the initial Value as a valid hexadecimal colour. By default this is stop 500, but it can be changed to any stop from 50-950.

For colours that have 100% Saturation, make the Palette more interesting by shifting the Hue up or down.

Palettes starting from a Base colour with little Saturation get more interesting by increasing Saturation at the extremes.

Shift the Minimum/Maximum Lightness/Luminance to spread out the rest of the colours to the extremes of white and black. Switch between Lightness and Luminance to produce a different spread of colours at the extremes.

These principles are inspired by the excellent Refactoring UI book by Adam Wathan & Steve Schoger. The same book recommends against automated tools, just like this one!

This tool exists to fast-track the creation of new palettes.

Any set of Palettes can be fetched via an API. You may find this useful for design tools that need to generate a 50-950 Palette from just a single Hex value.

Currently, the API will only return a Palette using the base hex value, with no options to have HSL tweaks.

Made by Simeon Griggs

• Designed with Tailwind CSS (obvs)
  • with a sprinkling of Headless UI
  • and a dash of HeroIcons
• Built with React Router
• Hosted on Cloudflare Workers
• Content in Sanity.io