# invert function

The `invert` function allows you to invert colors in a background image. The value `0` means that the image remains original. The value of `100%` or `1` completely inverts the background colors. Any number located in this range partially inverts the colors. A negative value cannot be specified. The default value is `0`.

## Syntax

`selector { filter: invert(number); }`

## Example

Let's invert the colors of our image to `50%`:

`<div id="elem"></div>` `#elem { filter: invert(50%); background: url("bg.png") center / cover no-repeat; width: 400px; height: 300px; border: 1px solid black; }`

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## Example

Now let's invert the colors of our image to the value of `100%`:

`<div id="elem"></div>` `#elem { filter: invert(100%); background: url("bg.png") center / cover no-repeat; width: 400px; height: 300px; border: 1px solid black; }`

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## Example

Now let's set the `invert` function to the value equal to `0`:

`<div id="elem"></div>` `#elem { filter: invert(0); background: url("bg.png") center / cover no-repeat; width: 400px; height: 300px; border: 1px solid black; }`

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## See also

- the `blur` function
  that blurs a background
- the `brightness` function
  that sets a background brightness
- the `contrast` function
  that sets a background contrast
- the `drop-shadow` function
  that sets a background shadow
- the `hue-rotate` function
  that sets a background hue
- the `opacity` function
  that sets a background opacity
- the `sepia` function
  that converts a background to sepia
- the `background` property
  that is a shorthand property for a background
- the `background-image` property
  with that you can set a background image for a block
- the `filter` property
  that sets a background style

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