You could always use 'reverse': 
#!/usr/bin/perl -w

use strict;

my %fruit = ( apple => 'green',
              orange => 'orange',
              banana => 'yellow' );

print ${{reverse %fruit}}{'yellow'};

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In reply to Re: Finding a hash key from the value (reverse lookup) by kilinrax
in thread Finding a hash key from the value (reverse lookup) by ryddler

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