The core HeroUI styles package containing CSS files for components, themes, and utilities. This package provides the foundation for HeroUI's design system using Tailwind CSS v4 and is framework-agnostic.

Documentation

It's the heroui.com website for the latest version of HeroUI.

Latest (v3): https://heroui.com
v2: https://v2.heroui.com

Installation

npm install @heroui/styles
# or
pnpm add @heroui/styles
# or
yarn add @heroui/styles

Usage

Basic Setup

Import the HeroUI styles in your main CSS file:

@import "@heroui/styles";

This will import:

Tailwind CSS base styles
HeroUI component styles
HeroUI utilities
Default theme variables
Animation utilities from tw-animate-css

Package Structure

The package exports CSS files organized into:

@heroui/styles/
├── index.css          # Main entry point
├── base/              # Base styles and CSS variables
│   └── base.css       # Layout tokens, typography, scrollbar
├── components/        # Component-specific styles
│   ├── accordion.css
│   ├── avatar.css
│   ├── button.css
│   ├── chip.css
│   ├── link.css
│   ├── popover.css
│   └── tooltip.css
├── themes/            # Theme definitions
│   ├── default/       # Default theme
│   │   ├── index.css  # Theme entry point
│   │   └── variables.css  # Theme variables (light/dark)
│   └── shared/        # Shared theme utilities
│       └── theme.css  # Calculated variables and utilities
└── utilities/         # Utility classes
    ├── backdrop.css
    └── index.css

Importing Specific Components

Instead of importing everything, you can import only what you need:

/* Import Tailwind CSS base */
@import "tailwindcss";

/* Import only specific components */
@import "@heroui/styles/components/button.css" layer(components);
@import "@heroui/styles/components/chip.css" layer(components);

/* Import theme */
@import "@heroui/styles/themes/default" layer(base);

Component Classes

Components use a BEM-like naming convention:

Base: .button
Variants: .button--primary, .button--danger
Sizes: .button--sm, .button--lg
Modifiers: .button--icon-only

Button Example

<!-- Basic button -->
<button class="button">Click me</button>

<!-- Primary variant -->
<button class="button button--primary">Save</button>

<!-- Small size -->
<button class="button button--sm">Small</button>

<!-- Icon-only button -->
<button class="button button--icon-only">
  <svg>...</svg>
</button>

<!-- Combining classes -->
<button class="button button--primary button--sm">Small Primary</button>

Themes

The default theme provides automatic light/dark mode support:

Light mode: Applied by default to :root
Dark mode: Applied with .dark class or [data-theme="dark"] attribute

<!-- Dark mode with class -->
<html class="dark">
  <!-- Dark mode with data attribute -->
  <html data-theme="dark"></html>
</html>

CSS Variables

The package provides a comprehensive set of CSS variables for customization:

Layout Tokens

:root {
  /* Spacing */
  --spacing: 0.25rem;

  /* Border */
  --border-width: 0px; /* no border by default */
  --field-border-width: var(--border-width);
  --disabled-opacity: 0.5;

  /* Radius */
  --radius: 0.5rem;
  --field-radius: calc(var(--radius) * 1.5);

  /* Ring offset - Used for focus ring */
  --ring-offset-width: 2px;

  /* Cursor */
  --cursor-interactive: pointer;
  --cursor-disabled: not-allowed;
}

Theme Colors

:root {
  /* Primitive Colors (Do not change between light and dark) */
  --white: oklch(100% 0 0);
  --black: oklch(0% 0 0);
  --snow: oklch(0.9911 0 0);
  --eclipse: oklch(0.2103 0.0059 285.89);

  /* Base Colors */
  --background: oklch(0.9702 0 0);
  --foreground: var(--eclipse);

  /* Surface: Used for non-overlay components (cards, accordions, disclosure groups) */
  --surface: var(--white);
  --surface-foreground: var(--foreground);

  /* Overlay: Used for floating/overlay components (tooltips, popovers, modals, menus) */
  --overlay: var(--white);
  --overlay-foreground: var(--foreground);

  --muted: oklch(0.5517 0.0138 285.94);
  --scrollbar: oklch(87.1% 0.006 286.286);

  --default: oklch(94% 0.001 286.375);
  --default-foreground: var(--eclipse);

  /* Interactive Colors */
  --accent: oklch(0.6204 0.195 253.83);
  --accent-foreground: var(--snow);

  /* Status Colors */
  --success: oklch(0.7329 0.1935 150.81);
  --success-foreground: var(--eclipse);

  --warning: oklch(0.7819 0.1585 72.33);
  --warning-foreground: var(--eclipse);

  --danger: oklch(0.6532 0.2328 25.74);
  --danger-foreground: var(--snow);

  /* Component Colors */
  --segment: var(--white);
  --segment-foreground: var(--eclipse);

  /* UI Colors */
  --border: oklch(0 0 0 / 0%);
  --separator: oklch(92% 0.004 286.32);
  --focus: var(--accent);
  --link: var(--foreground);

  /* Shadows */
  --surface-shadow:
    0 2px 4px 0 rgba(0, 0, 0, 0.04), 0 1px 2px 0 rgba(0, 0, 0, 0.06), 0 0 1px 0 rgba(0, 0, 0, 0.06);
  --overlay-shadow: 0 4px 16px 0 rgba(24, 24, 27, 0.08), 0 8px 24px 0 rgba(24, 24, 27, 0.09);
  --field-shadow:
    0 2px 4px 0 rgba(0, 0, 0, 0.04), 0 1px 2px 0 rgba(0, 0, 0, 0.06), 0 0 1px 0 rgba(0, 0, 0, 0.06);
}

Note: Dark mode overrides specific variables (like --background, --surface, --overlay, --muted, --scrollbar, --default, --warning, --danger, --segment, --separator, and shadow values) when .dark class or [data-theme="dark"] attribute is applied.

Field Tokens

:root {
  /* Form field defaults */
  --field-background: var(--white);
  --field-foreground: oklch(0.2103 0.0059 285.89);
  --field-placeholder: var(--muted);
  --field-border: transparent; /* no border by default on form fields */
  --field-border-width: var(--border-width);
  --field-radius: calc(var(--radius) * 1.5);
}

Providing any of these knobs automatically updates the generated utilities (bg-field, placeholder:text-field-placeholder, rounded-field, etc.) along with the calculated hover/focus variants.

Calculated Variables

The theme also provides calculated variables for hover states, soft colors, and surface levels (defined in themes/shared/theme.css):

Hover states: --color-accent-hover, --color-success-hover, --color-warning-hover, --color-danger-hover, --color-default-hover
Soft colors: --color-accent-soft, --color-danger-soft, --color-warning-soft, --color-success-soft (with their foreground and hover variants)
Surface levels: --color-surface-secondary, --color-surface-tertiary
Radius scale: --radius-xs through --radius-4xl (calculated from --radius)
Transition timing functions: Various easing curves like --ease-smooth, --ease-out-fuild, etc.

Dependencies

Tailwind CSS v4+: Required peer dependency
tw-animate-css: Provides animation utilities

Build Output

The package provides:

index.css: Main unminified CSS file
heroui.min.css: Minified production-ready CSS (generated during build)

Framework Integration

This package is designed to work with any framework. For React-specific components, use @heroui/react which builds on top of these core styles.

License

MIT

FAQs

What is @heroui/styles?

Is @heroui/styles popular?

Is @heroui/styles well maintained?

Package last updated on 17 Apr 2026

Did you know?

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install

@heroui/styles