The brightness function

The brightness function allows you to change a brightness of a background image. The initial brightness of the background is determined by the 100% value or 1; as they decrease, the image brightness also decreases. Accordingly, when the value increases more than 100%, the brightness increases. Negative values are not applied, and an empty value is automatically treated as 1.

Syntax

selector {
	filter: brightness(number);
}

Example

Let's set the brightness of our image to 20%:

<div id="elem"></div>

#elem {
	filter: brightness(20%);
	background: url("bg.png") center / cover no-repeat;
	width: 400px;
	height: 300px;
	border: 1px solid black;
}

Example

Now let's increase the brightness of the image to 120%:

<div id="elem"></div>

#elem {
	filter: brightness(120%);
	background: url("bg.png") center / cover no-repeat;
	width: 400px;
	height: 300px;
	border: 1px solid black;
}

Example

Let's set our image to its original brightness:

<div id="elem"></div>

#elem {
	filter: brightness(1);
	background: url("bg.png") center / cover no-repeat;
	width: 400px;
	height: 300px;
	border: 1px solid black;
}

The brightness function

Syntax

Example

Example

Example

See also