Whitehall-UI

GOV.UK Design System component library for React 19 + Tailwind CSS 4.

Distributed two ways:

• npm package — install whitehall-ui and import components.
• shadcn registry — copy component source straight into your project with the shadcn CLI.

Live Storybook & full component list: https://dawidmakos.github.io/whitehall-ui/

Requirements

These are peer dependencies — install them in your app:

npm install react@^19 react-dom@^19 tailwindcss@^4 @base-ui/react

Option A — npm package

1. Install

npm install whitehall-ui

2. Load the theme tokens

Import the GOV.UK design tokens in your CSS entry point, after Tailwind:

@import 'tailwindcss';
@import 'whitehall-ui/tokens.css';

3. Use a component

Import from the package root:

import { Button, TextInput, Label } from 'whitehall-ui';

export function Example() {
  return (
    <form>
      <Label htmlFor='name'>Full name</Label>
      <TextInput id='name' name='name' />
      <Button>Continue</Button>
    </form>
  );
}

Per-component subpath imports also work (better tree-shaking):

import { Button } from 'whitehall-ui/button';

Option B — shadcn registry

Copy the component source into your own codebase (fully editable, no runtime dependency on the package).

1. Add the theme tokens (once)

npx shadcn@latest add https://dawidmakos.github.io/whitehall-ui/r/govuk-tokens.json

2. Add components

npx shadcn@latest add https://dawidmakos.github.io/whitehall-ui/r/button.json
npx shadcn@latest add https://dawidmakos.github.io/whitehall-ui/r/text-input.json

Swap button / text-input for any component name below. The CLI resolves each component's dependencies (e.g. the cn util) automatically.

3. Use it

import { Button } from '@/components/ui/button';

export function Example() {
  return <Button>Continue</Button>;
}

Available components

accordion · back-link · breadcrumbs · button · character-count · checkboxes · cookie-banner · date-input · details · error-message · error-summary · exit-this-page · fieldset · file-upload · footer · generic-header · header · hint · inset-text · label · link · notification-banner · pagination · panel · password-input · phase-banner · radios · select · service-navigation · skip-link · summary-list · table · tabs · tag · task-list · text-input · textarea · warning-text

See the Storybook for props and live examples.

License

MIT