A Book of Colors

A color palette explorer

Free

Hundreds of hand-picked palettes, generators, and one-tap hex copy. Now with a Home Screen widget, Siri and Shortcuts, and export to Procreate and Adobe. Explore hundreds of hand-picked color palettes, build your own from color theory or a photo, and copy any hex with a tap. Everything syncs across iPhone, iPad, and Mac through iCloud. A Book of Colors is a color palette explorer and generator for designers, developers, artists, and anyone who works with color. Version 3.3 takes your palettes where you work: a widget that shows a palette an hour from your liked palettes, your own, or any pack, Siri and Shortcuts to open a palette or make one from a photo, palettes in Spotlight, and export to Procreate, Adobe apps, your wallpaper, and a printable PDF. It keeps the iOS 27 design: glass bars that float over the color, an icon-only tab bar, a Library tab, a side-by-side layout on iPad, and iPhone Duo support. THE PALETTE • Every palette fills the screen, with hex and RGB readouts on each color • Swipe up and down to move through palettes, left and right to change the layout • Ambient mode: palettes cycle on their own, full screen, until you tap WIDGET, SIRI, AND SPOTLIGHT • Add the Palette widget to your Home Screen for a palette an hour from your liked palettes, your own, or any pack, drawn in the layout you chose for it • Tap the widget to open that palette, or its small arrow for a new one right away • Ask Siri to open a random palette or make one from a photo, or add the Shortcuts actions to your own shortcuts • Search for a palette by name in Spotlight and open it from there CURATED LIBRARY • 800+ hand-picked palettes in the Starter Kit, organized by mood: warm, cool, vibrant, neutral, and dark • Palette packs you can show or hide, with new packs arriving in the Library tab • Filter by mood, type, number of colors, the colors a palette contains, and the pack it comes from CREATE YOUR OWN • Generate: pick a base color and a harmony (complementary, analogous, triadic, split, tetradic, or mono) and get a balanced palette computed in a perceptual color space • Manual: choose every color by hand • Photo: pull the dominant colors out of any photo, then drag the sample points to pick exactly the colors you want • Photo palettes also pick up the colors that stand out, not only the ones that cover the most of the picture EDIT AND REMIX • Press and hold the canvas to edit a palette in place: tap a color to recolor it, drag to reorder, add or remove colors up to ten • Edit any palette from its Browse card EXPORT • Procreate swatches: open the file in Procreate and the palette is there • Adobe swatch exchange: an ASE file for Illustrator, Photoshop, and other apps that read it • PNG: a clean, labeled image with hex and RGB values, or the palette together with its photo • Wallpaper: the palette at the exact size of your screen, with no labels • PDF: pick any palettes and get one palette per page, Letter or A4 • Send any export anywhere with the share sheet SYNCS EVERYWHERE • Saved palettes, photo extractions, generated palettes, and likes sync across every device signed into your iCloud, including source photos • See sync status in the Guide and sync manually any time Designed and built by Jason Gouliard

  • 5.0
    out of 5
    3 Ratings

This update introduces quick actions: press and hold the app icon for Ambient mode, create a new palette, launch the camera, or load a random palette. I added some improvements to the camera guide with the introduction of safe zones in the viewfinder.  There is also a a new widget size, some Duo optimizations, minor refinements and fixes. Thanks for using a book of colors!

The developer, Jason Gouliard, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    Jason Gouliard
    Size
    3.6 MB
    Category
    Utilities
    Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.
    • iPad
      Requires iPadOS 26.0 or later.
    • Mac
      Requires macOS 26.0 or later.
    • Apple Vision
      Requires visionOS 26.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Gouliard Software LLC