This app allows users to create, save, and edit color palettes in a unique, wheel-based interface, with the following tools:

1. Hammer, which can add, delete, modify, and reorder the colors in the palette.

2. Caliper, which can make the colors either more perceptually similar or more perceptually distinct with a slider.

3. Balance, which modifies all of the colors simultaneously from a single color-picker.



Rainbow Toolbox also has functionality for:

1. storing these palettes in a filesystem-like interface.

2. automatically converting images into color palettes.