CSS rgba() Function
Last Updated :
04 Aug, 2023
The rgba() function is an inbuilt function in CSS that is used to define the colors using the Red-Green-Blue-Alpha (RGBA) model. It is an extension of rgb() color values containing an alpha channel that specifies the transparency of color.
Syntax:
rgba( red, green, blue, alpha )
Parameters: This function accepts 4 parameters as described below:
- red: This parameter is used to define the intensity of the red color. It is an integer value that lies between 0 to 255, or as a percentage value between 0% to 100%.
- green: This parameter is used to define the intensity of the green color. It is an integer value that lies between 0 to 255, or as a percentage value between 0% to 100%.
- blue: This parameter is used to define the intensity of the blue color. It is an integer value that lies between 0 to 255, or as a percentage value between 0% to 100%.
- alpha: This parameter is used to define the opacity and the value lies between 0.0 (completely transparent) to 1.0 (completely opaque).
Example: This example illustrates the rgba() function where different color intensities (ie., red, blue & green), are displayed with the specific value for each color, along with the alpha value for setting the opacity of the color.
HTML
<!DOCTYPE html>
<html>
<head>
<title>rgba function</title>
<style>
.gfg1 {
background-color: rgba(1, 153, 0, 0.5);
text-align: center;
}
.gfg2 {
background-color: rgba(0, 255, 0, 0.5);
text-align: center
}
.gfg3 {
background-color: rgba(133, 150, 150, 0.5);
text-align: center
}
.gfg {
font-size: 40px;
font-weight: bold;
color: green;
text-align: center;
}
h1 {
text-align: center;
}
</style>
</head>
<body>
<div class="gfg">GeeksforGeeks</div>
<h1>The rgba() Function</h1>
<p class="gfg1">Green</p>
<p class="gfg2">Light green</p>
<p class="gfg3">Light black</p>
</body>
</html>
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Output:
Supported Browsers: The browser supported by rgba() function are listed below:
- Chrome
- Edge
- Firefox
- Safari
- Opera
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