HSLA代表色相，饱和度，亮度和Alpha。alpha值指定不透明度，如RGBA所示。
以下示例显示了HSLA颜色属性-
<html>
<head>
<style>
#d1 {background-color:hsla(120,100%,50%,0.3);}
#d2 {background-color:hsla(120,100%,75%,0.3);}
#d3 {background-color:hsla(120,100%,25%,0.3);}
</style>
</head>
<body>
<p>HSLA colors:</p>
<p id = "d1">Less opacity green</p>
<p id = "d2">Green</p>
<p id = "d3">Green</p>
</body>
</html>