As far as I know, and as merlyn pointed out, a Web safe palette should consist of 6 * 6 * 6 = 216 colours only.

Besides this, an obviuos improvement in the readability of your code could be using foreach instead of while loops, e.g.: 

my @nums = qw/00 33 66 99 CC FF/;
foreach my $r (@nums) {
    foreach my $g (@nums) {
        foreach my $b (@nums) {
            # Do something with $r, $g and $b
        }
    }
}

[download]

The usual way of representing this palette is either an 8 * 8 grid (using only the first 216 cells) or 6 tables, 6 * 6 each. The second approach is easier to program, the first more compact.

Speaking about CGI.pm, since you don't process input parameters, can't generate errors, always use the same Content-type, there are no big security concerns that should force you to use CGI instead of rolling your own. Nonetheless it is a good exercise and a good starting point for studying the module, which should be customary for more complex CGIs.

-- TMTOWTDI

In reply to Re: Web-Safe Color Chart by trantor
in thread Web-Safe Color Chart by Zecho

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.