SO fiddle
Test Fiddle mainly for SO Questions
by Nick Craver
HTML
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/overcast/jquery-ui.css">
<div id="colour" style="background-color: rgb(0, 70, 255);">
JavaScript
colourpixel = $('#colour').css('background-color').match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/);
alert("background-color: " + $('#colour').css('background-color') +
"\nRegex Result: " + colourpixel);