Toggle Button

Description

What it does

A toggle button switches between two mutually exclusive states — typically active and inactive — on press. The visual treatment clearly communicates the current state so users can see what is on or off at a glance.

Where it appears

Filter bars, toolbar controls, and list views where users need to switch a view mode or apply a reversible filter. Common in Open Point consultation management screens and stakeholder list views.

Why it exists

A plain button communicates an action; a toggle button communicates a persistent state. It replaces checkbox-style controls when the interaction is immediate (no Save step) and the binary choice is best expressed as a pressable affordance rather than a form field.

Dependencies

Button, Switch

Anatomy

Part	Required?	Notes
Container	Required	The pressable surface. Carries background, border, and border-radius. Minimum 44x44px touch target.
Label	Required	Short text describing the state or action. Should read as a noun or adjective, not a verb — for example 'Active', not 'Activate'.
Leading icon	Optional	Reinforces meaning visually. Use a wa-icon element. Particularly useful when the label alone may not be scannable at small sizes.
Focus ring	Required	3px solid ring using --op-color-interactive-focus. Always visible on keyboard focus; never suppressed.
State indicator (pressed fill)	Required	The background and border change between inactive and active states. Must meet 3:1 non-text contrast ratio for the state boundary.

Variants

Default (outlined inactive / filled active)

The standard toggle pattern. Inactive state is outlined; active state is filled with --op-color-interactive-default.

Use for most toggle button needs — filter pills, view mode switchers, and toolbar controls.

Subtle (ghost inactive / tinted active)

Lower visual weight. Inactive has no border or fill; active uses a tinted background.

Use inside dense toolbars or when the toggle sits alongside other high-emphasis controls and visual noise needs to be reduced.

Icon-only

No visible label — icon communicates the toggle state.

Use only when the icon is universally understood (e.g. a bookmark or star) and when space is extremely constrained. Always pair with a visible tooltip and an aria-label.

States

State	Behaviour
Inactive (default)	Button is rendered in its rest appearance — outlined border, no fill, label in --op-color-text-primary. Pressing transitions to active.
Active (pressed)	Background fills with --op-color-interactive-default. Label and icon use --op-color-text-on-interactive. aria-pressed is set to 'true'.
Hover (inactive)	Background tints with --op-color-interactive-hover at low opacity. Cursor is pointer.
Hover (active)	Background shifts to --op-color-interactive-hover. Indicates the press will deactivate.
Focus	3px focus ring appears using --op-color-interactive-focus. Ring is offset 2px from the container edge. Visible in both inactive and active states.
Disabled	Opacity 0.4. Pointer-events none. aria-disabled='true'. Do not use disabled as a permanent state — if the action is never available, remove the control.
Loading	Rare. If the toggle triggers an async action, replace the label with a wa-spinner and set aria-busy='true' until resolved. Prevent re-press during loading.

Usage guidelines

When to use

Switching a view between two modes, such as 'Map view' and 'List view' on a stakeholder directory.
Toggling a filter on or off in a consultation submissions list, such as filtering by 'Unread' or 'Flagged'.
Activating or deactivating a display option that takes effect immediately without a form submission, such as showing or hiding archived records.
Toolbar controls in rich-text or map editors where a mode can be turned on or off.

When not to use

When the setting persists beyond the current session and affects other users or system-level configuration — use a Switch with a Save action instead.
When there are more than two states — use a segmented control or radio button group.
When the action is destructive or irreversible — use a Button with a confirmation dialog.
Inside a form that requires submission to apply changes — use a Checkbox or Switch form field instead.
As a navigation element — use a Tab or Link.

Do / Don't

Label the toggle with its state noun, for example 'Active' or 'Pinned', so screen readers and sighted users can tell the current state.

Don't

Label with a verb like 'Activate' — this describes an action, not a state, and becomes misleading once the button is pressed.

Group related toggle buttons using role='group' with an aria-label describing the group.

Don't

Scatter independent toggle buttons without grouping context — users relying on assistive technology lose the relationship between controls.

Use the icon-only variant only with a wa-tooltip and aria-label.

Don't

Rely solely on colour or icon to communicate state — always include a text label or accessible name.

Keep labels short — one or two words. If the label needs more than three words, reconsider the control type.

Don't

Write sentence-length labels. Toggle buttons are not for complex choices.

Layout & Spacing

Padding: --op-space-8 (8px) vertical, --op-space-12 (12px) horizontal (default variant). Icon-only variant: --op-space-8 (8px) all sides. Gap between leading icon and label: --op-space-4 (4px). Border radius: --op-radius-md (8px) for default and subtle variants; --op-radius-pill (999px) for pill-shaped filter variants. Minimum height and width: 44px to meet touch target requirement. Focus ring offset: 2px outside the container border.

Tokens

Part	Token	Value
Container (inactive)	`--op-color-bg-primary`	Background. Border: 1px solid --op-color-border-default.
Container (active)	`--op-color-interactive-default`	Background fill. Border: 1px solid --op-color-interactive-default.
Container (hover, inactive)	`--op-color-interactive-hover`	Applied at 10% opacity over --op-color-bg-primary.
Label (inactive)	`--op-color-text-primary`	Text colour in inactive state.
Label (active)	`--op-color-text-on-interactive`	Text colour on filled active background.
Leading icon (inactive)	`--op-color-text-secondary`	Icon colour in inactive state.
Leading icon (active)	`--op-color-text-on-interactive`	Icon colour in active state.
Focus ring	`--op-color-interactive-focus`	3px solid, 2px offset. Required in all states.
Typography	`--op-text-sm`	Font size for label. Font family --op-font-body.
Disabled opacity	`opacity: 0.4`	Applied to the whole container. No token — raw CSS.

Engineering notes

Use a
Toggle aria-pressed between 'true' and 'false' on click. Never remove the attribute — its presence communicates that this is a stateful toggle to assistive technology.
wa-button does not natively support aria-pressed. Wrap in a
For grouped toggle buttons (e.g. filter pills), wrap in a
to communicate the relationship.
Respect prefers-reduced-motion — the active/inactive transition should use a CSS transition gated on a media query. Suggested transition: background-color 150ms ease, color 150ms ease.
The component must be keyboard operable. Both Enter and Space should trigger the toggle.
If the toggle triggers an async operation, set aria-busy='true' on the button and restore it when resolved. Prevent double-submission with a loading state.

Keyboard interaction

Key	Action
`Tab`	Moves focus to the toggle button. Focus ring becomes visible.
`Shift+Tab`	Moves focus to the previous focusable element.
`Enter`	Activates or deactivates the toggle. aria-pressed updates to reflect the new state.
`Space`	Activates or deactivates the toggle. aria-pressed updates to reflect the new state.

Why it matters

Government digital services must meet WCAG 2.1 AA. Toggle buttons that rely only on colour or visual fill to communicate state will fail for users with low vision or colour blindness — and may fail an accessibility audit on a regulated government platform. The aria-pressed attribute is the mechanism that makes state legible to screen readers.

Focus

Focus is managed by the browser's natural tab order. Do not use tabindex values other than 0 or -1. In a group of toggle buttons, each button is individually focusable. Do not implement roving tabindex unless the group is explicitly a toolbar (role='toolbar'). Focus ring must remain visible at all zoom levels up to 400%.

ARIA

Role or attribute	When to use	Example
`aria-pressed`	Set on the	`<button aria-pressed="true">Active</button>`
`aria-label`	Required on icon-only variants where the visible label is absent.	`<button aria-pressed="false" aria-label="Bookmark this stakeholder"><wa-icon name="bookmark"></wa-icon></button>`
`aria-disabled`	Use instead of the HTML disabled attribute when the button must remain focusable (e.g. to show a tooltip explaining why it is disabled).	`<button aria-pressed="false" aria-disabled="true">Archived</button>`
`role="group" + aria-label`	Wrap a set of related toggle buttons in a group element so screen readers announce the group context.	`<div role="group" aria-label="Filter submissions"><button aria-pressed="true">Unread</button><button aria-pressed="false">Flagged</button></div>`
`aria-busy`	Set to 'true' on the button while an async operation triggered by the toggle is in progress.	`<button aria-pressed="true" aria-busy="true">Saving...</button>`

Contrast

Inactive state: label text (--op-color-text-primary) on background (--op-color-bg-primary) must meet 4.5:1. Active state: label text (--op-color-text-on-interactive) on background (--op-color-interactive-default) must meet 4.5:1. Verify this ratio when theming — green-400 is the default but custom brand colours may not meet contrast. The state boundary (the border or fill change between inactive and active) must meet 3:1 against adjacent colours for non-text contrast (WCAG 1.4.11). Disabled state at 0.4 opacity will not meet contrast ratios — this is permitted under WCAG 1.4.3 exception for disabled controls, but minimise use of disabled state.

Touch targets

Minimum 44x44px touch target is required. If the visual button is smaller (e.g. a compact icon-only variant), use padding or a transparent pseudo-element to extend the interactive area without affecting layout.

Things to avoid

Do not remove aria-pressed when the button is in an inactive state. Its presence on all toggle buttons — regardless of state — is what signals the control is stateful.
Do not use colour alone to communicate active vs inactive state. Ensure there is also a shape, fill, or typographic change.
Do not use role='button' on a
or if you can use a native
Do not auto-focus a toggle button on page load unless it is the primary action on the screen.

Toggle Button

Description

Anatomy

Variants

States

Usage guidelines

Do / Don't

Layout & Spacing

Tokens

Engineering notes

Keyboard interaction

Focus

ARIA

Contrast

Touch targets

Things to avoid

Current renders

Current renders