tomevault-io Material Design 3 Components
Overview
This skill provides a comprehensive reference for all Material Design 3 (M3) components — covering the full specification from Material You foundations through M3 Expressive enhancements. Each component follows M3's token-based design system for color, shape, typography, motion, and layout.
Keywords: Material Design 3, M3, components, buttons, cards, dialogs, navigation, FAB, chips, text fields, tabs, menus, snackbar, bottom sheet, Material You, M3 Expressive
Component Categories
M3 components are organized into six categories:
- Action — Buttons, FABs, icon buttons, segmented buttons, split buttons, button groups
- Containment — Cards, carousels, dividers, lists, bottom sheets, side sheets
- Communication — Badges, dialogs, progress indicators, snackbars, tooltips
- Navigation — App bars, navigation bar, navigation drawer, navigation rail, tabs, search
- Selection — Checkboxes, chips, date/time pickers, menus, radio buttons, sliders, switches
- Text Input — Text fields (filled, outlined)
Action Components
Buttons
M3 defines five button types with increasing emphasis:
| Type | Emphasis | Use |
|---|---|---|
| Text Button | Lowest | Optional actions, less important actions |
| Outlined Button | Low | Important but not primary actions |
| Tonal Button | Medium | Actions that need more emphasis than outlined |
| Filled Button | High | Primary actions, main CTA |
| Elevated Button | Medium | Actions on visually busy backgrounds |
Common Button Specs:
- Height: 40dp
- Min width: 48dp
- Padding: 24dp horizontal, 10dp vertical
- Shape: Full radius (pill)
- Typography: Label Large
- Icon gap: 8dp
/* Filled Button */
.md3-button-filled {
background-color: var(--md-sys-color-primary);
color: var(--md-sys-color-on-primary);
border-radius: var(--md-sys-shape-corner-full);
padding: 10px 24px;
min-height: 40px;
font-family: var(--md-sys-typescale-label-large-font);
font-size: var(--md-sys-typescale-label-large-size);
font-weight: var(--md-sys-typescale-label-large-weight);
letter-spacing: var(--md-sys-typescale-label-large-tracking);
border: none;
cursor: pointer;
}
/* Outlined Button */
.md3-button-outlined {
background-color: transparent;
color: var(--md-sys-color-primary);
border: 1px solid var(--md-sys-color-outline);
border-radius: var(--md-sys-shape-corner-full);
padding: 10px 24px;
min-height: 40px;
}
/* Tonal Button */
.md3-button-tonal {
background-color: var(--md-sys-color-secondary-container);
color: var(--md-sys-color-on-secondary-container);
border-radius: var(--md-sys-shape-corner-full);
padding: 10px 24px;
min-height: 40px;
border: none;
}
/* Text Button */
.md3-button-text {
background-color: transparent;
color: var(--md-sys-color-primary);
border: none;
border-radius: var(--md-sys-shape-corner-full);
padding: 10px 12px;
min-height: 40px;
}
/* Elevated Button */
.md3-button-elevated {
background-color: var(--md-sys-color-surface-container-low);
color: var(--md-sys-color-primary);
border: none;
border-radius: var(--md-sys-shape-corner-full);
padding: 10px 24px;
min-height: 40px;
box-shadow: var(--md-sys-elevation-1);
}
Icon Buttons
Four variants: standard, filled, tonal, outlined.
- Size: 48dp touch target, 40dp visual
- Icon size: 24dp
.md3-icon-button {
width: 48px;
height: 48px;
border-radius: var(--md-sys-shape-corner-full);
display: inline-flex;
align-items: center;
justify-content: center;
background: transparent;
border: none;
color: var(--md-sys-color-on-surface-variant);
cursor: pointer;
}
.md3-icon-button-filled {
background-color: var(--md-sys-color-primary);
color: var(--md-sys-color-on-primary);
}
Floating Action Buttons (FABs)
Primary action buttons that float above content:
| Size | Dimensions | Corner Radius | Icon Size |
|---|---|---|---|
| Medium (replaces Small) | 40×40dp | 12dp | 24dp |
| Standard | 56×56dp | 20dp | 24dp |
| Large | 96×96dp | 32dp | 36dp |
| Extended | 56dp height, variable width | 20dp | 24dp + text |
/* Standard FAB */
.md3-fab {
width: 56px;
height: 56px;
border-radius: var(--md-sys-shape-corner-large);
background-color: var(--md-sys-color-primary-container);
color: var(--md-sys-color-on-primary-container);
border: none;
box-shadow: var(--md-sys-elevation-3);
display: inline-flex;
align-items: center;
justify-content: center;
cursor: pointer;
}
/* Large FAB */
.md3-fab-large {
width: 96px;
height: 96px;
border-radius: var(--md-sys-shape-corner-extra-large);
}
/* Extended FAB */
.md3-fab-extended {
height: 56px;
width: auto;
border-radius: var(--md-sys-shape-corner-large);
padding: 0 20px;
gap: 12px;
}
FAB Menu (M3 Expressive)
Tap a FAB to reveal additional contextual actions:
.md3-fab-menu {
display: flex;
flex-direction: column;
gap: var(--md-sys-spacing-2);
align-items: flex-end;
}
.md3-fab-menu-item {
display: flex;
align-items: center;
gap: var(--md-sys-spacing-3);
padding: var(--md-sys-spacing-2) var(--md-sys-spacing-4);
border-radius: var(--md-sys-shape-corner-large);
background: var(--md-sys-color-surface-container);
box-shadow: var(--md-sys-elevation-2);
}
Split Buttons (M3 Expressive)
Combine a primary action with a secondary dropdown:
.md3-split-button {
display: inline-flex;
border-radius: var(--md-sys-shape-corner-full);
overflow: hidden;
}
.md3-split-button-primary {
background: var(--md-sys-color-primary);
color: var(--md-sys-color-on-primary);
padding: 10px 16px;
border: none;
}
.md3-split-button-secondary {
background: var(--md-sys-color-primary);
color: var(--md-sys-color-on-primary);
padding: 10px 12px;
border: none;
border-left: 1px solid var(--md-sys-color-on-primary);
opacity: 0.3;
}
Button Groups (M3 Expressive)
Organize related buttons into connected or standard groups:
Standard Button Group: Buttons arranged in a container for single or multiple selection.
Connected Button Group: Visually merged buttons replacing deprecated segmented buttons.
.md3-button-group {
display: inline-flex;
border-radius: var(--md-sys-shape-corner-full);
overflow: hidden;
border: 1px solid var(--md-sys-color-outline);
}
.md3-button-group-item {
padding: 10px 24px;
background: transparent;
color: var(--md-sys-color-on-surface);
border: none;
border-right: 1px solid var(--md-sys-color-outline);
}
.md3-button-group-item:last-child {
border-right: none;
}
.md3-button-group-item[aria-pressed="true"] {
background: var(--md-sys-color-secondary-container);
color: var(--md-sys-color-on-secondary-container);
}
Segmented Buttons (Legacy — replaced by Button Groups in M3 Expressive)
Use button groups instead. Segmented buttons are deprecated in M3 Expressive.
Containment Components
Cards
Three card types for grouping content:
| Type | Background | Border | Elevation |
|---|---|---|---|
| Filled | surface-container-highest | None | Level 0 |
| Elevated | surface-container-low | None | Level 1 |
| Outlined | surface | 1px outline-variant | Level 0 |
/* Elevated Card */
.md3-card-elevated {
background: var(--md-sys-color-surface-container-low);
border-radius: var(--md-sys-shape-corner-medium);
box-shadow: var(--md-sys-elevation-1);
padding: var(--md-sys-spacing-4);
}
/* Filled Card */
.md3-card-filled {
background: var(--md-sys-color-surface-container-highest);
border-radius: var(--md-sys-shape-corner-medium);
padding: var(--md-sys-spacing-4);
}
/* Outlined Card */
.md3-card-outlined {
background: var(--md-sys-color-surface);
border: 1px solid var(--md-sys-color-outline-variant);
border-radius: var(--md-sys-shape-corner-medium);
padding: var(--md-sys-spacing-4);
}
Carousel
Horizontally scrollable container for browsing content:
.md3-carousel {
display: flex;
gap: var(--md-sys-spacing-2);
overflow-x: auto;
scroll-snap-type: x mandatory;
-webkit-overflow-scrolling: touch;
padding: var(--md-sys-spacing-4);
}
.md3-carousel-item {
scroll-snap-align: start;
flex-shrink: 0;
border-radius: var(--md-sys-shape-corner-extra-large);
overflow: hidden;
}
Bottom Sheets
Supplementary content from the bottom of the screen:
.md3-bottom-sheet {
position: fixed;
bottom: 0;
left: 0;
right: 0;
background: var(--md-sys-color-surface-container-low);
border-radius: var(--md-sys-shape-corner-extra-extra-large)
var(--md-sys-shape-corner-extra-extra-large) 0 0;
padding: var(--md-sys-spacing-6);
box-shadow: var(--md-sys-elevation-4);
}
.md3-bottom-sheet-handle {
width: 32px;
height: 4px;
background: var(--md-sys-color-on-surface-variant);
border-radius: var(--md-sys-shape-corner-full);
margin: 0 auto var(--md-sys-spacing-4);
opacity: 0.4;
}
Side Sheets
Slide out from the side for supplementary content:
.md3-side-sheet {
position: fixed;
top: 0;
right: 0;
bottom: 0;
width: 360px;
background: var(--md-sys-color-surface-container-low);
border-radius: var(--md-sys-shape-corner-extra-large) 0 0 var(--md-sys-shape-corner-extra-large);
padding: var(--md-sys-spacing-6);
box-shadow: var(--md-sys-elevation-4);
}
Dividers
Separate content within sections:
.md3-divider {
height: 1px;
background: var(--md-sys-color-outline-variant);
border: none;
}
/* Inset divider */
.md3-divider-inset {
margin-left: var(--md-sys-spacing-4);
}
Lists
Continuous vertical indexes of text or images:
.md3-list-item {
display: flex;
align-items: center;
gap: var(--md-sys-spacing-4);
padding: var(--md-sys-spacing-2) var(--md-sys-spacing-4);
min-height: 56px;
}
.md3-list-item-headline {
font-family: var(--md-sys-typescale-body-large-font);
font-size: var(--md-sys-typescale-body-large-size);
color: var(--md-sys-color-on-surface);
}
.md3-list-item-supporting {
font-family: var(--md-sys-typescale-body-medium-font);
font-size: var(--md-sys-typescale-body-medium-size);
color: var(--md-sys-color-on-surface-variant);
}
Communication Components
Badges
Small status indicators on icons or avatars:
/* Small badge (dot) */
.md3-badge-small {
width: 6px;
height: 6px;
border-radius: var(--md-sys-shape-corner-full);
background: var(--md-sys-color-error);
}
/* Large badge (with count) */
.md3-badge-large {
min-width: 16px;
height: 16px;
border-radius: var(--md-sys-shape-corner-full);
background: var(--md-sys-color-error);
color: var(--md-sys-color-on-error);
font-size: var(--md-sys-typescale-label-small-size);
font-weight: var(--md-sys-typescale-label-small-weight);
padding: 0 4px;
display: inline-flex;
align-items: center;
justify-content: center;
}
Dialogs
Prompt users for decisions or information:
.md3-dialog {
background: var(--md-sys-color-surface-container-high);
border-radius: var(--md-sys-shape-corner-extra-large);
padding: var(--md-sys-spacing-6);
min-width: 280px;
max-width: 560px;
box-shadow: var(--md-sys-elevation-3);
}
.md3-dialog-title {
font-family: var(--md-sys-typescale-headline-small-font);
font-size: var(--md-sys-typescale-headline-small-size);
color: var(--md-sys-color-on-surface);
margin-bottom: var(--md-sys-spacing-4);
}
.md3-dialog-content {
font-family: var(--md-sys-typescale-body-medium-font);
font-size: var(--md-sys-typescale-body-medium-size);
color: var(--md-sys-color-on-surface-variant);
margin-bottom: var(--md-sys-spacing-6);
}
.md3-dialog-actions {
display: flex;
justify-content: flex-end;
gap: var(--md-sys-spacing-2);
}
/* Scrim behind dialog */
.md3-dialog-scrim {
position: fixed;
inset: 0;
background: var(--md-sys-color-scrim);
opacity: 0.32;
}
Progress Indicators
Show process status — linear and circular:
/* Linear Progress */
.md3-progress-linear {
width: 100%;
height: 4px;
background: var(--md-sys-color-surface-container-highest);
border-radius: var(--md-sys-shape-corner-full);
overflow: hidden;
}
.md3-progress-linear-indicator {
height: 100%;
background: var(--md-sys-color-primary);
border-radius: var(--md-sys-shape-corner-full);
transition: width 200ms var(--md-sys-motion-easing-standard);
}
/* Circular Progress */
.md3-progress-circular {
width: 48px;
height: 48px;
border-radius: 50%;
border: 4px solid var(--md-sys-color-surface-container-highest);
border-top-color: var(--md-sys-color-primary);
animation: md3-spin 1.4s linear infinite;
}
@keyframes md3-spin {
to { transform: rotate(360deg); }
}
Snackbars
Brief messages about app processes:
.md3-snackbar {
background: var(--md-sys-color-inverse-surface);
color: var(--md-sys-color-inverse-on-surface);
border-radius: var(--md-sys-shape-corner-extra-small);
padding: var(--md-sys-spacing-4);
min-height: 48px;
display: flex;
align-items: center;
gap: var(--md-sys-spacing-2);
box-shadow: var(--md-sys-elevation-3);
max-width: 560px;
}
.md3-snackbar-action {
color: var(--md-sys-color-inverse-primary);
font-weight: var(--md-sys-typescale-label-large-weight);
}
Tooltips
Informative text on hover or long press:
/* Plain tooltip */
.md3-tooltip {
background: var(--md-sys-color-inverse-surface);
color: var(--md-sys-color-inverse-on-surface);
border-radius: var(--md-sys-shape-corner-extra-small);
padding: 4px 8px;
font-size: var(--md-sys-typescale-body-small-size);
max-width: 200px;
}
/* Rich tooltip */
.md3-tooltip-rich {
background: var(--md-sys-color-surface-container);
color: var(--md-sys-color-on-surface);
border-radius: var(--md-sys-shape-corner-medium);
padding: var(--md-sys-spacing-4);
box-shadow: var(--md-sys-elevation-2);
max-width: 320px;
}
Navigation Components
Top App Bar
Provides navigation and actions at the top:
| Type | Height | Description |
|---|---|---|
| Center-aligned | 64dp | Title centered |
| Small | 64dp | Title left-aligned |
| Medium | 112dp | Title below navigation icons |
| Large | 152dp | Prominent title display |
.md3-top-app-bar {
display: flex;
align-items: center;
height: 64px;
padding: 0 var(--md-sys-spacing-4);
background: var(--md-sys-color-surface);
color: var(--md-sys-color-on-surface);
gap: var(--md-sys-spacing-2);
}
.md3-top-app-bar-title {
font-family: var(--md-sys-typescale-title-large-font);
font-size: var(--md-sys-typescale-title-large-size);
flex: 1;
}
/* Scrolled state */
.md3-top-app-bar-scrolled {
background: var(--md-sys-color-surface-container);
box-shadow: var(--md-sys-elevation-2);
}
Bottom App Bar (Legacy — replaced by Docked Toolbar in M3 Expressive)
For apps that have not migrated to toolbars:
.md3-bottom-app-bar {
display: flex;
align-items: center;
height: 80px;
padding: 0 var(--md-sys-spacing-4);
background: var(--md-sys-color-surface-container);
gap: var(--md-sys-spacing-2);
}
Toolbars (M3 Expressive)
Replace bottom app bars with more flexible options:
Docked Toolbar: Full-width for global actions. Floating Toolbar: Floats above content for context-sensitive actions (horizontal or vertical).
/* Docked Toolbar */
.md3-toolbar-docked {
display: flex;
align-items: center;
height: 64px;
padding: 0 var(--md-sys-spacing-4);
background: var(--md-sys-color-surface-container);
gap: var(--md-sys-spacing-2);
}
/* Floating Toolbar (horizontal) */
.md3-toolbar-floating {
display: inline-flex;
align-items: center;
height: 56px;
padding: 0 var(--md-sys-spacing-3);
background: var(--md-sys-color-surface-container);
border-radius: var(--md-sys-shape-corner-large);
box-shadow: var(--md-sys-elevation-2);
gap: var(--md-sys-spacing-1);
backdrop-filter: blur(12px);
}
/* Floating Toolbar (vertical) */
.md3-toolbar-floating-vertical {
display: inline-flex;
flex-direction: column;
align-items: center;
width: 56px;
padding: var(--md-sys-spacing-3) 0;
background: var(--md-sys-color-surface-container);
border-radius: var(--md-sys-shape-corner-large);
box-shadow: var(--md-sys-elevation-2);
gap: var(--md-sys-spacing-1);
}
/* Vibrant Toolbar (high emphasis) */
.md3-toolbar-vibrant {
background: var(--md-sys-color-primary-container);
color: var(--md-sys-color-on-primary-container);
}
Navigation Bar (Bottom Navigation)
Primary navigation for mobile, displayed at screen bottom:
.md3-navigation-bar {
display: flex;
height: 80px;
background: var(--md-sys-color-surface-container);
box-shadow: var(--md-sys-elevation-2);
}
.md3-navigation-bar-item {
flex: 1;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
gap: 4px;
color: var(--md-sys-color-on-surface-variant);
min-width: 48px;
}
.md3-navigation-bar-item[aria-selected="true"] {
color: var(--md-sys-color-on-surface);
}
/* Active indicator */
.md3-navigation-bar-indicator {
background: var(--md-sys-color-secondary-container);
border-radius: var(--md-sys-shape-corner-full);
padding: 4px 20px;
}
Navigation Rail
Vertical navigation for medium-sized screens:
.md3-navigation-rail {
display: flex;
flex-direction: column;
width: 80px;
background: var(--md-sys-color-surface);
padding: var(--md-sys-spacing-3) 0;
align-items: center;
gap: var(--md-sys-spacing-3);
}
Navigation Drawer
Side panel navigation for large screens:
.md3-navigation-drawer {
width: 360px;
background: var(--md-sys-color-surface-container-low);
border-radius: 0 var(--md-sys-shape-corner-large) var(--md-sys-shape-corner-large) 0;
padding: var(--md-sys-spacing-3);
}
.md3-navigation-drawer-item {
display: flex;
align-items: center;
height: 56px;
padding: 0 var(--md-sys-spacing-4);
border-radius: var(--md-sys-shape-corner-full);
gap: var(--md-sys-spacing-3);
}
.md3-navigation-drawer-item[aria-selected="true"] {
background: var(--md-sys-color-secondary-container);
color: var(--md-sys-color-on-secondary-container);
}
Tabs
Switch between grouped content sections:
.md3-tabs {
display: flex;
border-bottom: 1px solid var(--md-sys-color-surface-variant);
}
.md3-tab {
flex: 1;
display: flex;
align-items: center;
justify-content: center;
height: 48px;
font-family: var(--md-sys-typescale-title-small-font);
font-size: var(--md-sys-typescale-title-small-size);
color: var(--md-sys-color-on-surface-variant);
border: none;
background: transparent;
cursor: pointer;
position: relative;
}
.md3-tab[aria-selected="true"] {
color: var(--md-sys-color-primary);
}
/* Active indicator */
.md3-tab[aria-selected="true"]::after {
content: '';
position: absolute;
bottom: 0;
left: 0;
right: 0;
height: 3px;
background: var(--md-sys-color-primary);
border-radius: 3px 3px 0 0;
}
Search
Input for querying and filtering content:
.md3-search-bar {
display: flex;
align-items: center;
height: 56px;
border-radius: var(--md-sys-shape-corner-full);
background: var(--md-sys-color-surface-container-highest);
padding: 0 var(--md-sys-spacing-4);
gap: var(--md-sys-spacing-4);
}
.md3-search-bar input {
flex: 1;
border: none;
background: transparent;
font-family: var(--md-sys-typescale-body-large-font);
font-size: var(--md-sys-typescale-body-large-size);
color: var(--md-sys-color-on-surface);
outline: none;
}
.md3-search-bar input::placeholder {
color: var(--md-sys-color-on-surface-variant);
}
Selection Components
Checkboxes
Multi-selection toggles:
- Size: 18dp visual, 48dp touch target
- Border: 2dp, outline color when unchecked
- Fill: primary when checked
- Check mark: on-primary
Radio Buttons
Single selection from options:
- Size: 20dp visual, 48dp touch target
- Border: 2dp, outline when unselected
- Fill: primary when selected
- Inner circle: 10dp
Switches
Toggle settings on or off:
- Track: 52×32dp
- Thumb: 16dp unchecked, 24dp checked
- Selected: primary track, on-primary thumb icon
- Unselected: surface-container-highest track, outline thumb
.md3-switch {
width: 52px;
height: 32px;
border-radius: var(--md-sys-shape-corner-full);
background: var(--md-sys-color-surface-container-highest);
border: 2px solid var(--md-sys-color-outline);
position: relative;
cursor: pointer;
transition: background 200ms var(--md-sys-motion-easing-standard);
}
.md3-switch[aria-checked="true"] {
background: var(--md-sys-color-primary);
border-color: var(--md-sys-color-primary);
}
.md3-switch-thumb {
width: 16px;
height: 16px;
border-radius: 50%;
background: var(--md-sys-color-outline);
position: absolute;
top: 50%;
left: 6px;
transform: translateY(-50%);
transition: all 200ms var(--md-sys-motion-easing-standard);
}
.md3-switch[aria-checked="true"] .md3-switch-thumb {
width: 24px;
height: 24px;
background: var(--md-sys-color-on-primary);
left: calc(100% - 28px);
}
Chips
Compact elements for filtering, input, or actions:
| Type | Use | Selectable |
|---|---|---|
| Assist | Suggest actions | No |
| Filter | Filter content | Yes |
| Input | User-entered data | Removable |
| Suggestion | Dynamic suggestions | No |
.md3-chip {
height: 32px;
border-radius: var(--md-sys-shape-corner-small);
padding: 0 16px;
display: inline-flex;
align-items: center;
gap: 8px;
font-family: var(--md-sys-typescale-label-large-font);
font-size: var(--md-sys-typescale-label-large-size);
border: 1px solid var(--md-sys-color-outline);
background: transparent;
color: var(--md-sys-color-on-surface-variant);
cursor: pointer;
}
.md3-chip[aria-selected="true"] {
background: var(--md-sys-color-secondary-container);
color: var(--md-sys-color-on-secondary-container);
border-color: transparent;
}
Sliders
Range or value selection:
- Track height: 4dp
- Thumb: 20dp
- Active track: primary
- Inactive track: surface-container-highest
Date Pickers and Time Pickers
Dialogs or inputs for selecting dates and times. Follow M3 dialog patterns with appropriate shape and color tokens.
Menus
Dropdown or context menus:
.md3-menu {
background: var(--md-sys-color-surface-container);
border-radius: var(--md-sys-shape-corner-extra-small);
box-shadow: var(--md-sys-elevation-2);
padding: var(--md-sys-spacing-2) 0;
min-width: 112px;
max-width: 280px;
}
.md3-menu-item {
display: flex;
align-items: center;
height: 48px;
padding: 0 var(--md-sys-spacing-3);
gap: var(--md-sys-spacing-3);
color: var(--md-sys-color-on-surface);
font-family: var(--md-sys-typescale-body-large-font);
font-size: var(--md-sys-typescale-body-large-size);
cursor: pointer;
}
Text Input Components
Text Fields
Two variants: Filled and Outlined.
Filled Text Field:
.md3-text-field-filled {
display: flex;
flex-direction: column;
background: var(--md-sys-color-surface-container-highest);
border-radius: var(--md-sys-shape-corner-extra-small) var(--md-sys-shape-corner-extra-small) 0 0;
padding: 8px 16px 8px;
position: relative;
}
.md3-text-field-filled input {
border: none;
background: transparent;
font-family: var(--md-sys-typescale-body-large-font);
font-size: var(--md-sys-typescale-body-large-size);
color: var(--md-sys-color-on-surface);
outline: none;
padding: 4px 0;
}
.md3-text-field-filled::after {
content: '';
position: absolute;
bottom: 0;
left: 0;
right: 0;
height: 1px;
background: var(--md-sys-color-on-surface-variant);
}
.md3-text-field-filled:focus-within::after {
height: 2px;
background: var(--md-sys-color-primary);
}
Outlined Text Field:
.md3-text-field-outlined {
display: flex;
flex-direction: column;
border: 1px solid var(--md-sys-color-outline);
border-radius: var(--md-sys-shape-corner-extra-small);
padding: 8px 16px;
}
.md3-text-field-outlined:focus-within {
border-color: var(--md-sys-color-primary);
border-width: 2px;
}
.md3-text-field-outlined input {
border: none;
background: transparent;
font-family: var(--md-sys-typescale-body-large-font);
font-size: var(--md-sys-typescale-body-large-size);
color: var(--md-sys-color-on-surface);
outline: none;
}
Labels and Supporting Text:
.md3-text-field-label {
font-family: var(--md-sys-typescale-body-small-font);
font-size: var(--md-sys-typescale-body-small-size);
color: var(--md-sys-color-on-surface-variant);
}
.md3-text-field-supporting {
font-family: var(--md-sys-typescale-body-small-font);
font-size: var(--md-sys-typescale-body-small-size);
color: var(--md-sys-color-on-surface-variant);
padding: 4px 16px 0;
}
.md3-text-field-error .md3-text-field-supporting {
color: var(--md-sys-color-error);
}
Component Interaction States
All M3 components follow consistent interaction state patterns:
| State | Visual Effect |
|---|---|
| Enabled | Default appearance |
| Hovered | 8% state layer overlay |
| Focused | 12% state layer overlay + focus indicator |
| Pressed | 12% state layer overlay |
| Dragged | 16% state layer overlay |
| Disabled | 38% content opacity, 12% background opacity |
Framework-Specific Component Usage
For framework-specific component examples (setup, theming, and usage), see the dedicated library skills:
- React / MUI / Next.js:
m3-web-react - Angular Material:
m3-web-angular - Vue / Vuetify 3:
m3-web-vue - Svelte / SMUI:
m3-web-svelte - Web Components (
@material/web):m3-web-webcomponents - Tailwind CSS:
m3-web-tailwind - Ink (React CLI):
m3-web-ink - Vanilla CSS:
m3-web-vanilla - Flutter:
m3-web-flutter - Android / Jetpack Compose:
m3-web-android
Accessibility Guidelines for Components
- Touch targets: Minimum 48×48dp for all interactive components
- Focus indicators: Visible outline (2px solid primary, 2px offset)
- Color contrast: 4.5:1 for text, 3:1 for interactive elements
- ARIA attributes: Use appropriate roles, labels, and states
- Keyboard navigation: All components must be fully keyboard operable
- Screen reader support: Use semantic HTML and ARIA announcements
Checklist for Component Implementation
When implementing M3 components, ensure:
- Component uses appropriate M3 color tokens (not hard-coded colors)
- Shape follows the M3 shape scale for that component type
- Typography uses the correct type scale role
- All interaction states are implemented (hover, focus, pressed, disabled)
- Touch targets meet 48×48dp minimum
- Focus indicators are visible and have adequate contrast
- Component works in both light and dark themes
- Disabled states use correct opacity values (38% content, 12% background)
- Motion uses spring-based easing for transitions
- ARIA attributes are correctly applied
- Component is fully keyboard navigable
- M3 Expressive additions (FAB menu, split buttons, button groups, toolbars) are used where appropriate
- Library-specific best practices are followed (see library-specific skills:
m3-web-react,m3-web-angular, etc.)
Resources
component-tokens.md— Quick reference for all @material/web component CSS custom property prefixes, included in this skill's directory.examples/component-anatomy.svg— Visual reference SVG showing M3 component anatomy: button variants, card variants, FAB sizes, and interactive state layers with token mappings.- M3 component specs: https://m3.material.io/components
- M3 for Web: https://m3.material.io/develop/web
- @material/web: https://github.com/material-components/material-web
- Angular Material: https://github.com/angular/components
- Material Design Tokens: https://github.com/material-foundation/material-tokens
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