Radix UI Primitives

Headless accessibility primitives

FreeCore design stackradix-ui.com

What it is

Unstyled, behavior-only components — Dialog, Popover, Select, Dropdown — with focus traps, keyboard nav and ARIA solved. Zero CSS opinions, so no Tailwind conflict. Maintained by WorkOS. You already have it transitively via shadcn.

Why it earns a slot

Reach for it when your project needs a component shadcn does not ship — an issue-picker combobox, a lightbox with proper focus management, a filter drawer. Accessibility on a publication site is not optional.

Know before you commit

Use Primitives, not Radix Themes — Themes brings its own CSS reset and token system and will fight your Tailwind setup. Also note shadcn defaulted to Base UI in July 2026; do not run both primitive layers.

Getting started

npm install radix-ui

Field notes

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Pricing snapshot

Free · MIT

Snapshots move fast — verify at checkout, and post a field note if it changed.

Drop into your Lovable chat

Evaluate Radix UI Primitives (https://www.radix-ui.com/) for this project, then use it only if it fits what we are already building.
Context: Headless accessibility primitives. Unstyled, behavior-only components — Dialog, Popover, Select, Dropdown — with focus traps, keyboard nav and ARIA solved. Zero CSS opinions, so no Tailwind conflict. Maintained by WorkOS. You already have it transitively via shadcn.
Reviewer notes (general, not written for this codebase): Reach for it when your project needs a component shadcn does not ship — an issue-picker combobox, a lightbox with proper focus management, a filter drawer. Accessibility on a publication site is not optional.
Watch out for: Use Primitives, not Radix Themes — Themes brings its own CSS reset and token system and will fight your Tailwind setup. Also note shadcn defaulted to Base UI in July 2026; do not run both primitive layers.
Pricing: Free · MIT
Setup: npm install radix-ui
Rules: treat the notes above as background only. Do not assume a theme, style, layout or feature that is not already in this project — inspect the existing code first and ask me before changing visual direction.

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