You could also use utf8::encode

$ perl -le " $f = chr hex q/C0/; utf8::encode( $f ); print $f " |od -t
+x1
0000000 c3 80 0d 0a
0000004
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Like http://www.utf8-chartable.de/unicode-utf8-table.pl?start=192 shows, unicode code point U+00C0 encoded as UTF-8 is c3 80