Scale
Turn one colour into many.
Build shades, tints, tones and hue steps from your primary colour, in the colour space you choose.
A calm place to build colour palettes.
Scales, harmonies, themes and contrast checks in one Mac app.
macOS 15.5 or later
Features
Pair
Find the colours that go with it.
Complementary, split complementary, triadic, rectangle, tetradic and analogous sets, each built around your colour.
Mix
Blend between colours.
A board of 72 cells. Place colours as anchors and see every step between them, then keep the ones you like.
Theme
A whole theme in twelve steps.
Primary, secondary, accent, neutral and status colours, each in twelve steps from background to text.
Contrast
Check that it reads well.
Test any pair against WCAG 2 and APCA. Curves show where each pass mark lies, and Adjust FG or Adjust BG fixes a failing pair by changing lightness only.
Learn
Learn as you go.
Short lessons on hue, harmony and mixing. Every example uses your own colour, so the lessons change with it.
Yours, and only on your Mac.
- 12
colours per palette, saved as you go, with undo.
- 3
export formats. ASE for Adobe apps, plus SVG and CSS.
- 0
accounts, trackers or network connections. The app never goes online.
- 15.5
is the oldest macOS it runs on. Built natively for the Mac.
Changelog
1.0 In testing
- Six tabs: Scale, Pair, Mix, Theme, Contrast and Learn.
- Palettes of up to 12 colours, saved as you go, with undo.
- Contrast checks in WCAG 2 and APCA, with Adjust FG and Adjust BG to fix a failing pair.
- A built-in colour picker that works the same on every supported macOS.
- 23 starter palettes to explore and keep.
- Export as ASE, SVG or CSS.
FAQ
Which Macs does it run on?
Any Mac running macOS 15.5 Sequoia or later.
Why does macOS warn me when I first open it?
Irogasane is not notarized by Apple yet. Drag it to Applications and open it once. Then go to System Settings, Privacy & Security, and click Open Anyway. You only need to do this once.
Does it collect any data?
No. The app has no network access, so nothing you make leaves your Mac.
Where are my palettes kept?
In the app's own folder on your Mac. Every change saves on its own, and undo covers deleting and renaming.
Can I use my palettes in other apps?
Yes. Export a palette as ASE for Adobe apps, SVG for any design tool, or CSS custom properties for code.
What does the name mean?
Irogasane (色襲) means layered colours. It names the old practice of wearing colours in layers so their edges show together, which is what a good palette does too.