CSS | hsla() Function

The hsla() function is an inbuilt function in CSS which is used to define the colors using the Hue Saturation Lightness Alpha (HSLA) model.

Syntax:

hsla( hue, saturation, lightness, alpha )

Parameters: This function accepts four parameters as mentioned above and described below:



  • hue: This parameter is used to define the degree on the color wheel. Its value lies between 0 to 360 where 0 or 360 represents red, 120 represents green and 240 represents blue.
  • saturation: This parameter is used to define the saturation where 0% represents shade of gray and 100% represents full color.
  • lightness: This parameter is used to define the lightness where 0% represents black, 50% represents normal, and 100% represents white.
  • alpha: This parameter is used to defines the opacity and the value lies between 0.0 (fully transparent) and 1.0 (fully opaque).

Below program illustrates the hsla() function in CSS:

Program:

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<!DOCTYPE html>
<html>
    <head>
        <title>hsla function</title>
        <style
            .gfg1 {
                background-color:hsla(120, 100%, 40%, 0.3);
                text-align:center;
            }
            .gfg2 {
                background-color:hsla(120, 100%, 75%, 0.3);
                text-align:center
            }
            .gfg3 {
                background-color:hsla(120, 100%, 20%, 0.3);
                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 hsla() Function</h1>
        <p class = "gfg1">Green</p>
        <p class = "gfg2">Light green</p>
        <p class = "gfg3">Dark green</p>
    </body>
</html>

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Output:

Supported Browsers: The browser supported by hsla() function are listed below:

  • Chrome 1.0 and above
  • Internet Explorer 9.0 and above
  • Firefox 3.0 and above
  • Safari 3.1 and above
  • Opera 10.0 and above


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