A quick look at one of the small Android apps I'm building solo, with .NET MAUI, under Horizon Software.
Every designer and developer has done this: found a colour they like, then spent twenty minutes squinting at a colour wheel trying to work out what goes with it — and another ten converting the result into whatever format the project needs. Tintbox is a free Android app that collapses both jobs into a few taps. Pick a colour, get a palette built on real colour theory, check it for accessibility, and export it straight into your codebase. It works completely offline, with no account.
Start with one colour, get a palette
Type an exact HEX, RGB or HSL value, or drag the sliders until it looks right. Tintbox then builds the classic colour-theory harmonies around it — complementary, analogous, triadic, monochromatic and tetradic — so you can see five credible directions instead of guessing at one. Tap any swatch to copy it as HEX, rgb(...) or hsl(...).
Steal a palette from a photo
