You don't need to escape the # like you don't need to escape it in strings either: print $1 if 'background-color:#fe34e5' =~ /background-color:\s*#([0-9a-fA-F]{6});*/ig yields fe34e5
By the way: ;* is a no-op in your regex, so you colud as well leave it out.
Hope this helped.
CombatSquirrel.

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Entropy is the tendency of everything going to hell.