Radix UI vs Shadcn/ui: Headless Primitives vs Styled Components
Detailed comparison of Radix UI primitives and shadcn/ui component library. Architecture, DX, and when to choose each.
Radix UI
shadcn/ui
Free (MIT)
Free (MIT)
Teams that want unstyled, accessible component primitives with full control over styling and composition
Teams that want beautiful, pre-styled components built on Radix primitives with Tailwind CSS that they own and customize
- Unstyled, accessible primitives (Dialog, Dropdown, Popover, etc.)
- WAI-ARIA compliant with keyboard navigation and focus management
- Composable API with compound component pattern
- Bring your own styling: works with any CSS approach
- Incremental adoption: install only the primitives you need
- SSR-compatible with no hydration issues
- Copy-paste components: code lives in your project, not node_modules
- Built on Radix UI primitives for accessibility
- Styled with Tailwind CSS and CSS variables for theming
- CLI for adding individual components to your project
- Dark mode support with CSS variable-based theming
- Extensive component library: 40+ components with variants
I've used both. shadcn/ui is what I reach for, and it's built on Radix under the hood. The choice is really whether you want to style the primitives yourself (Radix) or start from a polished default and customize freely (shadcn/ui). Unless your design language is so far from shadcn's defaults that you'd rewrite everything anyway, start with shadcn/ui. You can always strip back to raw Radix later.
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