@steps=(0,139,205,255);
for ($red = 0; $red < 4; $red++) {
for ($green = 0; $green < 4; $green++) {
for ($blue = 0; $blue < 4; $blue++) {
printf("\x1b]4;%d;rgb:%2.2x/%2.2x/%2.2x\x1b\\",
16 + ($red * 16) + ($green * 4) + $blue,
int (@steps[$red]),
int (@steps[$green]),
int (@steps[$blue]));
}
}
}
for ($gray = 0; $gray < 8; $gray++) {
$level = ($gray * 23.18181818) + 46.36363636;
if( $gray > 0 ) { $level += 23.18181818; }
printf("\x1b]4;%d;rgb:%2.2x/%2.2x/%2.2x\x1b\\",
80 + $gray, int($level), int($level), int($level));
}
print "System colors:\n";
for ($color = 0; $color < 8; $color++) {
print "\x1b[48;5;${color}m ";
}
print "\x1b[0m\n";
for ($color = 8; $color < 16; $color++) {
print "\x1b[48;5;${color}m ";
}
print "\x1b[0m\n\n";
print "Color cube, 4x4x4:\n";
for ($green = 0; $green < 4; $green++) {
for ($red = 0; $red < 4; $red++) {
for ($blue = 0; $blue < 4; $blue++) {
$color = 16 + ($red * 16) + ($green * 4) + $blue;
print "\x1b[48;5;${color}m ";
}
print "\x1b[0m ";
}
print "\n";
}
print "Grayscale ramp:\n";
for ($color = 80; $color < 88; $color++) {
print "\x1b[48;5;${color}m ";
}
print "\x1b[0m\n";