Backdrop Brightness

Usage

Use the backdrop-brightness-{amount?} utilities alongside the backdrop-filter utility to control an element’s backdrop brightness.

<div class="backdrop-filter backdrop-brightness-125 ...">
  <!-- ... -->
</div>

Responsive

To control an element’s backdrop brightness at a specific breakpoint, add a {screen}: prefix to any existing backdrop brightness utility. For example, use md:backdrop-brightness-150 to apply the backdrop-brightness-150 utility at only medium screen sizes and above.

<div class="backdrop-filter backdrop-brightness-110 md:backdrop-brightness-150 ...">
  <!-- ... -->
</div>

For more information about Tailwind’s responsive design features, check out the Responsive Design documentation.

Customizing

You can customize which backdrop-brightness utilities are generated using the backdropBrightness key in the theme section of your tailwind.config.js file.

  // tailwind.config.js
  module.exports = {
    theme: {
+     extend: {
+       backdropBrightness: {
+         25: '.25',
+         175: '1.75',
+       }
+     }
    }
  }

Learn more about customizing the default theme in the theme customization documentation.

Variants

By default, only responsive variants are generated for backdrop brightness utilities.

You can control which variants are generated for the backdrop brightness utilities by modifying the backdropBrightness property in the variants section of your tailwind.config.js file.

For example, this config will also generate hover and focus variants:

  // tailwind.config.js
  module.exports = {
    variants: {
      extend: {
        // ...
+       backdropBrightness: ['hover', 'focus'],
      }
    }
  }

Disabling

If you don't plan to use the backdrop brightness utilities in your project, you can disable them entirely by setting the backdropBrightness property to false in the corePlugins section of your config file:

  // tailwind.config.js
  module.exports = {
    corePlugins: {
      // ...
+     backdropBrightness: false,
    }
  }