A Book of Colors

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Hundreds of hand-curated color palettes, organized into downloadable packages. Generate new ones from color theory or extract them from any photo. Copy hex codes with a tap, save your favorites, and export them as images. No accounts, no tracking — everything stays on your device.

Browse

Hundreds of palettes organized by mood — warm, cool, vibrant, neutral, dark. Filter, swipe, and save the ones you love.

Packages

Install additional palette packages like Jason's Paintings anytime. The app checks monthly for updates so your library stays fresh without any work.

Generate

Pick any base color and choose from six color theory schemes: Complementary, Analogous, Triadic, Split-Complementary, Tetradic, or Monochromatic.

Extract

Point your camera at anything — a painting, a room, a sunset — and the app extracts an equal-column palette of dominant colors using k-means clustering.

Export

Save any palette as a 1080×1080 image with hex and RGB values labeled, written straight to your Photos library. Ready for moodboards, Figma files, or just your camera roll.

Private by design

No accounts, no analytics, no tracking, no servers holding your data. Everything you do — saved palettes, preferences, photos — stays on your device.

How it works

↑ Swipe up to load a new random palette
↓ Swipe down to go back to the previous palette
↔ Swipe left or right to change the layout
⬤ Tap the circle icon to open the settings panel
# Tap any color to copy its hex code to clipboard
↗ Saving a palette also writes an image to your Photos library
◎ Use Photo in the Create tab to generate palettes from any image

Built by Jason Gouliard — San Francisco-based artist, designer, and design leader.