sass-references/angular-material/material/slider/slider.md

<mat-slider> allows for the selection of a value from a range via mouse, touch, or keyboard, similar to <input type="range">.

Selecting a value

By default the minimum value of the slider is 0, the maximum value is 100, and the thumb moves in increments of 1. These values can be changed by setting the min, max, and step attributes respectively. The initial value is set to the minimum value unless otherwise specified.

<mat-slider min="1" max="5" step="0.5">
  <input matSliderThumb value="1.5">
</mat-slider>

Selecting a range

A <mat-slider> can be converted into a range slider by projecting both a matSliderStartThumb and a matSliderEndThumb into it. Each thumb has its own value, but both are still constrained by the slider's min and max values. The matSliderStartThumb cannot have a value greater than that of the matSliderEndThumb and the matSliderEndThumb cannot have a value less than that of the matSliderStartThumb, though they both may have the same value.

<mat-slider>
  <input matSliderStartThumb>
  <input matSliderEndThumb>
</mat-slider>

Thumb label

By default, the exact selected value of a slider is not visible to the user. However, this value can be added to the thumb by adding the discrete attribute.

<mat-slider discrete>
  <input matSliderThumb>
</mat-slider>

Formatting the thumb label

By default, the value in the slider's thumb label will be the same as the model value, however this may end up being too large to fit into the label. If you want to control the value that is being displayed, you can do so using the displayWith input.

Tick marks

By default, sliders do not show tick marks along the thumb track. This can be enabled using the showTickMarks attribute.

<mat-slider showTickMarks>
  <input matSliderThumb>
</mat-slider>

Keyboard interaction

The slider has the following keyboard bindings:

Key	Action
Right arrow	Increment the slider value by one step (decrements in RTL).
Up arrow	Increment the slider value by one step.
Left arrow	Decrement the slider value by one step (increments in RTL).
Down arrow	Decrement the slider value by one step.
Page up	Increment the slider value by 10% (of the max value).
Page down	Decrement the slider value by 10% (of the max value).
End	Set the value to the maximum possible.
Home	Set the value to the minimum possible.

Accessibility

MatSlider uses an internal <input type="range"> to provide an accessible experience. The input receives focus and it can be labelled using aria-label or aria-labelledby.

Make sure the colors of the active and inactive track of the MatSlider meet at least a 3:1 contrast ratio with the background. This can be achieved through changing the active or inactive track colors or showing tick marks on the track that have at least a 3:1 color contrast ratio with the background.