Svelte Material UI

Svelte Material UI (SMUI) is the most complete and specification-compliant Material Design implementation available for Svelte. Built on top of Google’s official MDC Web library, it ensures that components behave and appear exactly as the Material Design specification intends.

The component set covers core Material patterns: buttons, cards, chips, dialogs, drawers, FABs, icon buttons, linear progress, lists, menus, paper surfaces, radio buttons, segmented buttons, select menus, sliders, snackbars, switches, tabs, text fields, tooltips, and data tables. Each component faithfully implements the Material specification including proper motion, elevation, and interaction states.

Accessibility is strong across the library. MDC Web’s foundation layer handles ARIA attributes, keyboard interactions, and focus management according to Material’s accessibility guidelines, and SMUI preserves these behaviors in its Svelte integration. This is a meaningful advantage over Material-inspired libraries that only approximate the visual design without the underlying accessibility work.

Theming uses SASS variables to customize the Material Design theme: primary and secondary colors, surface colors, typography scale, and shape (border radius). This provides deep customization within the Material framework, but it requires a SASS compilation step in your build process. The theming system is powerful but adds complexity compared to CSS custom property or Tailwind-based approaches.

SMUI has been maintained for several years, making it one of the more mature Svelte UI libraries. The Svelte 5 migration has been handled, though some components are being incrementally updated. The developer, Hunter Perrin, has been a consistent steward of the project.

The fundamental question with SMUI is whether Material Design is right for your project. If you are building an application where the Material aesthetic is appropriate — internal tools at organizations using Google’s ecosystem, Android companion apps, or products where users expect Material patterns — SMUI is the definitive choice. If Material Design feels too opinionated for your brand, the styling will fight you at every turn.

SMUI is a solid, mature choice for Material Design in Svelte. It does one thing and does it well.