代码示例：（标识：css3_color_hsla）
<!DOCTYPE html>
<html>
<head>
<style>
#p1 {background-color:hsla(120,100%,50%,0.3);}
#p2 {background-color:hsla(120,100%,75%,0.3);}
#p3 {background-color:hsla(120,100%,25%,0.3);}
#p4 {background-color:hsla(120,60%,70%,0.3);}
#p5 {background-color:hsla(290,100%,50%,0.3);}
#p6 {background-color:hsla(290,60%,70%,0.3);}
</style>
</head>
<body>
<h1>用 HSLA 值定义颜色</h1>
<p id="p1">绿色</p>
<p id="p2">浅绿色</p>
<p id="p3">深绿色</p>
<p id="p4">淡绿色</p>
<p id="p5">紫色</p>
<p id="p6">淡紫色</p>
</body>
</html>
