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Slider

A value picked by dragging along a track, when an exact number is not needed.

Left out of Accessible first The scheme avoids widgets that need drag or precise pointing. A person with a tremor completes a form here, and an exact answer is typed. Use instead: Input, Radio group

See it live​

Start Storybook to see it live: npm run storybook
Live from StorybookOpen Slider in StorybookSee it in dark

When to use it​

  • Use it when: Volume, brightness, a rough range; pair with a number field when precision matters.
  • Not when: An exact answer people must type.

Instead:

Words​

  • Use common words. Explain any term you must use.
  • One idea per sentence. Put the action first.
  • Never blame the person.
  • Use: Continue, Change, Start, You. Avoid: Invalid, Utilise, Submit, Error code.

The labels components use, from the voice tokens:

  • content.action.commit: Continue
  • content.action.cancel: Go back
  • content.action.destroy: Delete
  • content.action.retry: Try again
  • content.action.empty-action: Start a new application

See Voice and tone for the whole voice.

Accessibility and keyboard​

KeyboardWhat happensNot
undefinedArrow keys change the value; Home and End jump to the ends.undefined

Test before you ship:

  • It has a name and announces its value. undefined

Use it in code​

npx open-ds add slider

The component reads only component keys and semantic tokens, so it follows the brand and mode on <html>.

Tokens it reads​

Slider reads 13 tokens of its own, each an alias of a semantic token. Each row is one part: its own token, the semantic it aliases, and the value it ends at. Change a semantic and every component that reads it follows; override one of Slider's tokens to change Slider alone.

Changes with theme

Accessible first decides what changes when you switch theme. Here a switch changes colors only, so the marked rows differ between light and dark; everything else holds steady.

PartIts token and the semantic it aliasesValue
Slider
Disabled opacity disabled
when disabled		component.slider.disabled-opacity-disabledopacity.disabledvar(--slider-disabled-opacity-disabled)opacity.50:0.5
Track
Cornercomponent.slider.track.radiusradius.roundvar(--slider-track-radius)radius.full:9999px
Fill
Changes with theme		component.slider.track.backgroundcolor.surface.sunkenvar(--slider-track-background)Lightgray.light.100:#EDEDEDDarkgray.dark.100:#222222
Range
Fill
Changes with theme		component.slider.range.backgroundcolor.action.primaryvar(--slider-range-background)Lightblue.light.600:#0B4FC0Darkblue.dark.600:#8AB4F8
Thumb
Icon sizecomponent.slider.thumb.icon-sizesize.iconvar(--slider-thumb-icon-size)size.20:1.25rem
Cornercomponent.slider.thumb.radiusradius.roundvar(--slider-thumb-radius)radius.full:9999px
Border
Changes with theme		component.slider.thumb.bordercolor.action.primaryvar(--slider-thumb-border)Lightblue.light.600:#0B4FC0Darkblue.dark.600:#8AB4F8
Shadowcomponent.slider.thumb.shadowelevation.cardvar(--slider-thumb-shadow)shadow.none
Focus ring
Changes with theme		component.slider.thumb.focus-ringcolor.border.focusvar(--slider-thumb-focus-ring)Lightblue.light.600:#0B4FC0Darkblue.dark.600:#8AB4F8
Disabled opacity disabled
when disabled		component.slider.thumb.disabled-opacity-disabledopacity.disabledvar(--slider-thumb-disabled-opacity-disabled)opacity.50:0.5
Focus
on focus		component.slider.thumb.focusborder-width.focusvar(--slider-thumb-focus)border-width.3:3px
Focus ring focus
Changes with theme
on focus		component.slider.thumb.focus-ring-focuscolor.border.focusvar(--slider-thumb-focus-ring-focus)Lightblue.light.600:#0B4FC0Darkblue.dark.600:#8AB4F8
Focus ring offset focus
Changes with theme
on focus		component.slider.thumb.focus-ring-offset-focuscolor.surface.canvasvar(--slider-thumb-focus-ring-offset-focus)Lightgray.light.50:#F7F7F7Darkgray.dark.0:#0A0A0A
From the system
Edge
Changes with theme		color.border.default
straight from the system, through --border		Lightgray.light.200 · #D6D6D6Darkgray.dark.100 · #222222