CSS invert() Function (original) (raw)

Last Updated : 30 Aug, 2024

The **invert() function is an inbuilt function that is used to apply a filter to the image to set the invert of the color of the sample image.

**Syntax:

invert( amount )

**Parameters: This function accepts single parameter **amount which holds the amount of conversion. The value of invert is set in terms of value and percentage. The value 0% represents original image and 100% represents the inverted image. The **invert() function internally uses the following formula, to computer the inverse of the image:

amount * (255 - value) + (1 - amount) * value

The value of inversion is controlled by the variable amount, the variable value lies between **0 – 1(floating) range (this is done by converting the passed percentage of color inversion to a value between 0-1). The **value is the color value of the pixel. (255-value) gives the color after subtracting the color value with the max pixel value, assumes that the value of the pixel is in the range **0 – 255 (though input image sample space could be stretched/scaled to meet the specified criteria). Below is a table containing a list of inversion percentages and the result they produce.

**Inversion **Result
**0% **Original Image
**50% **Image with each pixel having grey color
**100% **Completely inverted Image

Below example illustrates **CSS invert() function in CSS:

**Example:

html `

CSS invert() Function 
<style>
    h1 {
        color:green;
    }
    body {
        text-align:center;
    }
    .invert_effect {
        filter: invert(100%);
    }
</style>

GeeksforGeeks

<h2>CSS invert() function</h2>

<img class="invert_effect" src=

"https://media.geeksforgeeks.org/wp-content/cdn-uploads/20190710102234/download3.png" alt="GeeksforGeeks logo">

`

**Output:

**Supported Browsers: The browsers supported by invert() function are listed below: