The RGBA color value is for Red, Green, Blue and Alpha. The alpha is the color opacity i.e. a number between 0.0 and 1.0. Here, 1.0 would be for full opaque. Here, we can see the difference in opacity created with the Alpha parameter in RGBA −
Example
Let us now see an example for RGBA color values −
<!DOCTYPE html>
<html>
<head>
<style>
#demo1 {background-color:rgba(108,111,35,0.6);}
#demo2 {background-color:rgba(108,111,35,0.5);}
#demo3 {background-color:rgba(108,111,35,0.4);}
#demo4 {background-color:rgba(108,111,35,0.3);}
#demo5 {background-color:rgba(108,111,35,0.2);}
#demo6 {background-color:rgba(108,111,35,0.1);}
</style>
</head>
<body>
<h1>Cricketers</h1>
<p id="demo1">David Warner</p>
<p id="demo2">Steve Smith</p>
<p id="demo3">Mark Waugh</p>
<p id="demo4">Steve Waugh</p>
<p id="demo5">David Johnson</p>
<p id="demo6">Andy Bichel</p>
</body>
</html>Output