But the output i wanted is the page to be in blue color and some text displaying on it BUT not the code of the HTML.

So you viewed the resulting file in a browser and you're seeing the raw HTML rather than a rendered page? Might be an issue with your content-type line. Try:

print "Content-type: text/html \n\n";
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Note that the CGI module can handle these headers for you and then you don't need to worry about it:

use CGI qw/:standard/;
print header;
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