use Convert::Color::RGB8;
use Test::More tests => 7 * ($ENV{RELEASE_TESTING} ? 4096 : 512);
-use constant EPSILON => $ENV{RELEASE_TESTING} ? 1e-11 : 2e-4;
+use constant EPSILON => $ENV{RELEASE_TESTING} ? 1e-8 : 2e-4;
my @spaces = qw/XYZ LUV LCh HSLuv HPLuv/;
sub isf {