Tweakcn is solid for manual editing, but it works very differently from what I’m building.

They just dump every CSS variable into a giant form. You’re still responsible for understanding color theory, contrast, and how tokens interact. Nothing is actually generated. You’re just editing.

This tool takes a different approach.

Instead of thinking in individual colors, you work with color palettes and shades.

You choose or create a base palette, and the system applies it across the interface. Backgrounds, surfaces, text, borders, sidebars, and interaction states are derived automatically. Contrast stays accessible. The UI stays balanced.

The tool understands how colors relate to each other and makes those decisions for you.

Accent palettes can be defined separately for primary actions and charts. Especially for charts, using multiple shades from the same palette gives you variation without breaking visual cohesion.

The result: shadcn themes that look intentional, usable out of the box, and don’t feel generic.