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The API documentation of the Fab React component. Learn more about the props and the CSS customization points.


import Fab from '@material-ui/core/Fab';
// or
import { Fab } from '@material-ui/core';

You can learn more about the difference by reading this guide.

Component name

The MuiFab name can be used for providing default props or style overrides at the theme level.


Name Type Default Description
children* node The content of the button.
classes object Override or extend the styles applied to the component. See CSS API below for more details.
color 'default'
| 'inherit'
| 'primary'
| 'secondary'
'default' The color of the component. It supports those theme colors that make sense for this component.
component elementType 'button' The component used for the root node. Either a string to use a HTML element or a component.
disabled bool false If true, the button will be disabled.
disableFocusRipple bool false If true, the keyboard focus ripple will be disabled.
disableRipple bool If true, the ripple effect will be disabled.
href string The URL to link to when the button is clicked. If defined, an a element will be used as the root node.
size 'large'
| 'medium'
| 'small'
'large' The size of the button. small is equivalent to the dense button styling.
variant 'extended'
| 'circular'
| 'round'
'circular' The variant to use. 'round' is deprecated, use 'circular' instead.

The ref is forwarded to the root element.

Any other props supplied will be provided to the root element (ButtonBase).


Rule name Global class Description
root .MuiFab-root Styles applied to the root element.
label .MuiFab-label Styles applied to the span element that wraps the children.
primary .MuiFab-primary Styles applied to the root element if color="primary".
secondary .MuiFab-secondary Styles applied to the root element if color="secondary".
extended .MuiFab-extended Styles applied to the root element if variant="extended".
focusVisible .Mui-focusVisible Pseudo-class applied to the ButtonBase root element if the button is keyboard focused.
disabled .Mui-disabled Pseudo-class applied to the root element if disabled={true}.
colorInherit .MuiFab-colorInherit Styles applied to the root element if color="inherit".
sizeSmall .MuiFab-sizeSmall Styles applied to the root element if `size="small"``.
sizeMedium .MuiFab-sizeMedium Styles applied to the root element if `size="medium"``.

You can override the style of the component thanks to one of these customization points:

If that's not sufficient, you can check the implementation of the component for more detail.


The props of the ButtonBase component are also available. You can take advantage of this behavior to target nested components.