<!DOCTYPE html>
<html>
<head>
<style>
#p1 {background-color:#ff0000;}
#p2 {background-color:#00ff00;}
#p3 {background-color:#0000ff;}
#p4 {background-color:#ffff00;}
#p5 {background-color:#ff00ff;}
</style>
</head>
<body>
<h2>HEX colors</h2>
<p>A hexadecimal color is specified with: #RRGGBB, where the RR (red), GG (green) and BB (blue) hexadecimal integers specify the components of the color. All values must be between 00 and FF.</p>
<p id="p1">Red</p>
<p id="p2">Green</p>
<p id="p3">Blue</p>
<p id="p4">Yellow</p>
<p id="p5">Cerise</p>
</body>
</html>