Are you looking at the page's code, or the page through the web server? There is nothing in your script involving printing the web page to the actual web browser (I don't know why you are printing the Content-type header in this code, honestly.)
This code, as far as I can tell, does the exact same thing, except that when it is opened in a web browser, it will fail.
my $outname = "/usr/anil/scripts/myhtml.html";
open HTML, '>', $outname or die "Couldn't create '$outname': $!";
print HTML "<html>\n";
print HTML "<head>\n";
print HTML "<title>My Home Page</title>";
print HTML "</head>\n";
print HTML "<body bgcolor = blue>\n";
print HTML "Here we have an HTML page with a paragraph.";
print HTML "</body>\n";
print HTML "</html>\n";
What are you trying to do here? If you open '/usr/anil/scripts/myhtml.html' in a web browser and see the code, perhaps it is because you have a plain HTML page located in a cgi-bin type folder. You should probably save it somewhere like '/usr/anil/html/myhtml.html', but I don't know how your server is structured.