terminal colour cheat sheet

<: -sub luminance { - # perceived brightness (using ITU-R recommendation 601 luma co-efficients) - my ($r, $g, $b) = @_; - return $r*.299 + $g*.587 + $b*.114; -} +use Shiar_Sheet::Colour; sub colcell { - my $id = shift; - my @rgb = @_ >= 3 ? @_ : (map {hex} $_[0] =~ /(..)/g); - my $rgb24 = ''; - $rgb24 .= sprintf '%X', min($_ / 17 + .5, 15) for @rgb[0..2]; - my $rgb48 = ''; - $rgb48 .= sprintf '%02X', $_ for @rgb[0..2]; - my $inverse = sprintf('%X', luminance(@rgb)/255 < .3 ? 12 : 0) x 3; - return sprintf '%s%s%s'."\n", - "background:#$rgb48; color:#$inverse", - $id, - "background:#000; color:#$rgb48", - $rgb24, - "background:#FFF; color:#$rgb48", - $rgb24, + my $name = shift; + my $col = Shiar_Sheet::Colour->new(@_); + my $minhex = $col->rgb24; + my $css = '#' . $col->rgb48; + my $inverse = '#' . sprintf('%X', $col->luminance/255 < .3 ? 12 : 0) x 3; + + my $sample = [ qw(#000 #FFF) ]; + ($name, $sample) = @$name if ref $name eq 'ARRAY'; + + my $out = sprintf('%s', + join(',', map { int } @$col), + "background:$css; color:$inverse; padding:0 1ex", + $name, + ); + $out .= sprintf '%s', "background:$_; color:$css", $minhex + for @$sample; + return "$out\n"; } my %col = ( -html => [ + sprintf('html', + 'HTML keywords (inherited by CSSâ¥2.1 and SVG), mostly identical to X11', + 'http://www.w3.org/TR/css3-color/#html4', + ), qw/black maroon green olive navy purple cyan silver gray red lime yellow blue fuchsia aqua white/, qw/reset bold dim italic underline blink fastblink reverse hidden/, ], html => [ - qw/000000 CCCCCC/, qw/000000 800000 008000 808000 000080 800080 008080 C0C0C0 808080 FF0000 00FF00 FFFF00 0000FF FF00FF 00FFFF FFFFFF/, ], +# -cga => linux console, kde? cga => [ - qw/000000 CCCCCC/, qw/000000 AA0000 00AA00 AA5500 0000AA AA00AA 00AAAA AAAAAA 555555 FF5555 55FF55 FFFF55 5555FF FF55FF 55FFFF FFFFFF/, ], +# -xterm => rxvt except for blues xterm => [ - qw/000000 CCCCCC/, qw/000000 CC0000 00CC00 CCCC00 4682B4 CC00CC 00CCCC E5E5E5 4C4C4C FF0000 00FF00 FFFF00 1E90FF FF00FF 00FFFF FFFFFF/, ], +# -tango => default Gnome theme tango => [ - qw/000000 CCCCCC/, qw/2E3436 CC0000 4E9A06 C4A000 3465A4 75507B 06989A D3D7CF 555753 EF2929 8AE234 FCE94F 729FCF AD7FA8 34E2E2 EEEEEC/, ], + -xkcd => [ + sprintf('xkcd', + 'human averages in xkcd survey results', + 'http://blog.xkcd.com/2010/05/03/color-survey-results/', + ), + qw/black maroon green olive navy purple teal silver + grey red lime yellow blue fuchsia cyan white/, + ], + xkcd => [ + qw/000000 650021 15b01a 6e750e 01153e 7e1e9c 029386 c5c9c7 + 929591 e50000 aaff32 ffff14 0343df ed0dd9 00ffff ffffff/, + ], + -android => [ + sprintf('android', + 'http://developer.android.com/guide/practices/ui_guidelines/icon_design.html', + 'recommended colour palette for Android icons', + ), + qw/white light medium dark black blue1 blue2 blue3 + green1 green2 green3 orange1 orange2 orange3 red /, + ], + android => [ + qw/FFFFFF BFBFBF 808080 404040 000000 6699FF 3366CC 003399 + 99CC33 00CC00 669933 FFCC00 FF9900 FF6600 CC0000 /, + ], ); -for my $term (qw/html cga xterm tango/) { +for my $term (qw/cga xterm tango html xkcd/) { print '', "\n"; - print "\n"; - for my $num (0 .. 15) { - my $rgb = $col{$term}[$num + 2]; - print '', - colcell($col{"-$term"}[$num] || $num, $rgb, $col{$term}[0]); + printf "\n", $col{"-$term"}[0] || $term; + for my $num (0 .. $#{ $col{$term} }) { + my $rgb = $col{$term}[$num]; + my $name = $col{"-$term"}[$num + 1] || $num; + $name = [ $name, ['#333'] ] if $term eq 'xkcd'; + print '', colcell($name, $rgb); } print "

\n\n"; } @@ -102,10 +128,11 @@ for my $r (0 .. 3) { print "\n"; print ''; -print colcell(80, ($_) x 3) for 46, 92, 115, 139, 162, 185, 208, 231; +print colcell(80+$_, (($_ + 2 + ($_>0)) * 255/11) x 3) for 0 .. 7; print "

\n\n"; -:>

Terminal colours