I found a nice Python script for that on GitHub written by Justin Abrahms which also prints the hex codes of the colours.
Download the script to current working directory
wget https://gist.githubusercontent.com/justinabrahms/1047767/raw/a79218b6ca8c1c04856968d2d202510a4f7ec215/colortest.py
give it execute permission
chmod +x colortest.py
Run it:
#!/usr/bin/env python
./colortest.py
Here's the script in full in case of link-rot:
#!/usr/bin/env python
# Ported to Python from http://www.vim.org/scripts/script.php?script_id=1349
print "Color indexes should be drawn in bold text of the same color."
print "Color indexes should be drawn in bold text of the same color."
colored = [0] + [0x5f + 40 * n for n in range(0, 5)]
print
colored = [0] + [0x5f + 40 * n for n in range(0, 5)]
colored_palette = [
"%02x/%02x/%02x" % (r, g, b)
for r in colored
for g in colored
for b in colored
]
grayscale = [0x08 + 10 * n for n in range(0, 24)]
grayscale = [0x08 + 10 * n for n in range(0, 24)]
grayscale_palette = [
"%02x/%02x/%02x" % (a, a, a)
for a in grayscale
]
normal = "\033[38;5;%sm"
normal = "\033[38;5;%sm"
bold = "\033[1;38;5;%sm"
reset = "\033[0m"
for (i, color) in enumerate(colored_palette + grayscale_palette, 16):
for (i, color) in enumerate(colored_palette + grayscale_palette, 16):
index = (bold + "%4s" + reset) % (i, str(i) + ':')
hex = (normal + "%s" + reset) % (i, color)
newline = '\n' if i % 6 == 3 else ''
print index, hex, newline,
Download the script to current working directory
wget https://gist.githubusercontent.com/justinabrahms/1047767/raw/a79218b6ca8c1c04856968d2d202510a4f7ec215/colortest.py
(or copy-paste altogether)
give it execute permission
chmod +x colortest.py
Run it:
./colortest.py
