4 title => 'terminal colour cheat sheet',
7 "Index of all terminal/console colour codes,",
8 "with an example result of various environments.",
11 color code terminal console escape table xterm rxvt
13 data => ['termcol.inc.pl'],
14 stylesheet => [qw'light dark'],
18 <h1>Terminal colours</h1>
21 <span title="ECMA-48">ANSI</span> (VT100, ISO-6429) 16-colour text palette
22 as implemented by various systems and programs.
25 !exists $get{v} ? 'Also see <a href="?v">8-bit legacy hardware</a> palettes.' :
26 'Also included are 8-bit legacy hardware palettes.';
32 use Shiar_Sheet::Colour '1.03';
33 use List::Util qw( min max );
35 my $palettes = do 'termcol.inc.pl';
36 die "Cannot open palette data: $_\n" for $@ || $! || ();
39 my $name = shift // return "<td colspan=3>\n";
40 my $col = Shiar_Sheet::Colour->new(@_);
41 my $minhex = $col->rgb24;
42 my $css = '#' . $col->rgb48;
43 my $inverse = '#' . sprintf('%X', $col->luminance/255 < .3 ? 12 : 0) x 3;
45 my $sample = [ qw(#000 #FFF) ];
46 ($name, $sample) = @$name if ref $name eq 'ARRAY';
48 my $out = sprintf('<td title="%s" style="%s">%s',
49 join(',', map { int } @$col),
50 "background:$css; color:$inverse; padding:0 1ex",
53 $out .= sprintf '<td style="%s"><code>%s</code>', "background:$_; color:$css", $minhex
60 arnegame => [ 0,5,9,12 , 3,6,10,13,1 , 4,7,8,11,14,15,2 ],
61 arnegame => [ 0,3,10,6,12,9,13,1 , 5,7,11,8,14,4,15,2 ],
62 c64 => [ 0,2,5,9,6,4,3,15 , 11,10,13,7,14,8,12,1 ],
63 msx2 => [ 0,6,2,10,4,13,7,14 , 1,8,3,11,5,9,12,15 ],
64 risc => [ 7,11,13,14,8,12,15,1, 6,5,10,9,4,3,2,0],
65 mac2 => [ 15,3,9,11,6,5,7,12 , 14,2,8,1,13,4,10,0 ],
67 $reorder{$_} = $reorder{msx2} for qw( msx1 arnejmp );
68 while (my ($name, $order) = each %reorder) {
69 for my $pal ( $palettes->{$name}) {
70 $pal = [ map { $pal->[$_ + 1] =~ s/:|$/:$_/r } -1, @{$order} ];
75 my @termlist = qw( cga xterm tango app html xkcd );
76 push @termlist, qw( c64 msx2 mac2 risc arnegame ) if exists $get{v};
77 for my $term (@termlist) {
78 my $info = $palettes->{$term};
79 ref $info eq 'HASH' or next;
80 my $caption = $info->{name} // $term;
81 $caption = sprintf('<%s %s>%s</%1$s>',
82 $info->{href} ? 'a' : 'span',
84 map { sprintf '%s="%s"', $_, $info->{$_} }
85 grep { defined $info->{$_} }
89 ) if $info->{href} or $info->{title};
91 if (my $colours = $info->{list}) {
92 print '<table>', "\n";
93 printf "<caption>%s</caption>\n", $caption;
94 for my $num (0 .. $#{$colours}) {
95 my ($rgb, $name) = split /:/, $colours->[$num], 3;
97 $name = [ $name, ['#333'] ] if $term eq 'xkcd';
98 print '<tr>', colcell($name, $rgb);
100 print "</table>\n\n";
104 if (exists $get{v}) {
105 print "<table class=mapped>\n";
106 print "<caption>Amstrad CPC</caption>\n";
107 print coltable_hsv(3, sub {
108 $_[2] + 3 * ($_[0] + 3 * $_[1]),
109 map { $_ && $_ * 127 + 1 } @_
111 print "</table>\n\n";
117 <div class="section">
120 my ($dim, $rgbval, $greyramp) = @_;
122 my $hmax = 2 * $dim * 3; # each face of the rgb cube
125 $rgbval ||= sub { join('', @_), map { int $_ * 255 / $vmax } @_ };
128 my %greymap; # name => value
129 my @colmap; # saturation => value => hue => [name, r,g,b]
130 my $offset = 16 * ($dim > 3);
132 for my $r (0 .. $dim - 1) {
133 for my $g (0 .. $dim - 1) {
134 for my $b (0 .. $dim - 1) {
135 my @rgb = ($r, $g, $b);
137 my $h = Shiar_Sheet::Colour->new(@rgb)->hue * $hmax;
139 my $s = abs(min(@rgb) - max(@rgb));
142 my ($index, $l) = $rgbval->(@rgb);
143 $greymap{$index} = $l;
148 $s = $smax - $s - $v;
150 $colmap[$s][$v][$h] = [ $rgbval->(@rgb) ];
156 $out .= sprintf '<colgroup span=%d>', 3 * @{$_} for @colmap;
157 my $huerow = $colmap[0][0]; # first {$_} map { @{$_} } @colmap;
158 for my $h (grep { $huerow->[$_] } 0 .. $#{$huerow}) {
160 $out .= colcell(@$_) for map { $_->[$h] } map { @{$_} } @colmap;
163 $offset += $dim ** 3;
164 $greymap{$offset++} = $_ for @{$greyramp};
168 my $colbreak = scalar map { @$_ } @colmap; # same width as hue rows
169 for my $num (sort { $greymap{$a} <=> $greymap{$b} } keys %greymap) {
170 $out .= '<tr>' unless $col++ % $colbreak;
171 $out .= colcell($num, ($greymap{$num}) x 3);
178 print "<h2>88-colour space</h2>\n";
179 print "<table class=mapped>\n";
180 print coltable_hsv(4,
182 $_[2] + 4 * ($_[1] + 4 * $_[0]) + 16,
183 map { (0, 139, 205, 255)[$_] } @_
185 [map { ($_ + 2 + ($_>0)) * 255/11 } 0 .. 7],
190 if ($ENV{PATH_INFO} =~ /256/) {
191 print "<h2>256-colour space</h2>\n";
192 print "<table class=mapped>\n";
193 print coltable_hsv(6,
195 $_[2] + 6 * ($_[1] + 6 * $_[0]) + 16,
196 map { $_ && $_*40 + 55 } @_
198 [ map { $_ * 10 + 8 } 0 .. 23 ],