Run the program along with arguements like this: python file.py 9CE445
to get the closest 8-bit color value and python file.py 204
to get the exact Hex value.
""" Convert values between RGB hex codes and xterm-256 color codes.
Nice long listing of all 256 colors and their codes. Useful for
developing console color themes, or even script output schemes.
Resources:
* http://en.wikipedia.org/wiki/8-bit_color
* http://en.wikipedia.org/wiki/ANSI_escape_code
* /usr/share/X11/rgb.txt
I'm not sure where this script was inspired from. I think I must have
written it from scratch, though it's been several years now.
"""
__author__ = 'Micah Elliott http://MicahElliott.com'
__version__ = '0.1'
__copyright__ = 'Copyright (C) 2011 Micah Elliott. All rights reserved.'
__license__ = 'WTFPL http://sam.zoy.org/wtfpl/'
import sys, re
CLUT = [
('00', '000000'),
('01', '800000'),
('02', '008000'),
('03', '808000'),
('04', '000080'),
('05', '800080'),
('06', '008080'),
('07', 'c0c0c0'),
('08', '808080'),
('09', 'ff0000'),
('10', '00ff00'),
('11', 'ffff00'),
('12', '0000ff'),
('13', 'ff00ff'),
('14', '00ffff'),
('15', 'ffffff'),
('16', '000000'),
('17', '00005f'),
('18', '000087'),
('19', '0000af'),
('20', '0000d7'),
('21', '0000ff'),
('22', '005f00'),
('23', '005f5f'),
('24', '005f87'),
('25', '005faf'),
('26', '005fd7'),
('27', '005fff'),
('28', '008700'),
('29', '00875f'),
('30', '008787'),
('31', '0087af'),
('32', '0087d7'),
('33', '0087ff'),
('34', '00af00'),
('35', '00af5f'),
('36', '00af87'),
('37', '00afaf'),
('38', '00afd7'),
('39', '00afff'),
('40', '00d700'),
('41', '00d75f'),
('42', '00d787'),
('43', '00d7af'),
('44', '00d7d7'),
('45', '00d7ff'),
('46', '00ff00'),
('47', '00ff5f'),
('48', '00ff87'),
('49', '00ffaf'),
('50', '00ffd7'),
('51', '00ffff'),
('52', '5f0000'),
('53', '5f005f'),
('54', '5f0087'),
('55', '5f00af'),
('56', '5f00d7'),
('57', '5f00ff'),
('58', '5f5f00'),
('59', '5f5f5f'),
('60', '5f5f87'),
('61', '5f5faf'),
('62', '5f5fd7'),
('63', '5f5fff'),
('64', '5f8700'),
('65', '5f875f'),
('66', '5f8787'),
('67', '5f87af'),
('68', '5f87d7'),
('69', '5f87ff'),
('70', '5faf00'),
('71', '5faf5f'),
('72', '5faf87'),
('73', '5fafaf'),
('74', '5fafd7'),
('75', '5fafff'),
('76', '5fd700'),
('77', '5fd75f'),
('78', '5fd787'),
('79', '5fd7af'),
('80', '5fd7d7'),
('81', '5fd7ff'),
('82', '5fff00'),
('83', '5fff5f'),
('84', '5fff87'),
('85', '5fffaf'),
('86', '5fffd7'),
('87', '5fffff'),
('88', '870000'),
('89', '87005f'),
('90', '870087'),
('91', '8700af'),
('92', '8700d7'),
('93', '8700ff'),
('94', '875f00'),
('95', '875f5f'),
('96', '875f87'),
('97', '875faf'),
('98', '875fd7'),
('99', '875fff'),
('100', '878700'),
('101', '87875f'),
('102', '878787'),
('103', '8787af'),
('104', '8787d7'),
('105', '8787ff'),
('106', '87af00'),
('107', '87af5f'),
('108', '87af87'),
('109', '87afaf'),
('110', '87afd7'),
('111', '87afff'),
('112', '87d700'),
('113', '87d75f'),
('114', '87d787'),
('115', '87d7af'),
('116', '87d7d7'),
('117', '87d7ff'),
('118', '87ff00'),
('119', '87ff5f'),
('120', '87ff87'),
('121', '87ffaf'),
('122', '87ffd7'),
('123', '87ffff'),
('124', 'af0000'),
('125', 'af005f'),
('126', 'af0087'),
('127', 'af00af'),
('128', 'af00d7'),
('129', 'af00ff'),
('130', 'af5f00'),
('131', 'af5f5f'),
('132', 'af5f87'),
('133', 'af5faf'),
('134', 'af5fd7'),
('135', 'af5fff'),
('136', 'af8700'),
('137', 'af875f'),
('138', 'af8787'),
('139', 'af87af'),
('140', 'af87d7'),
('141', 'af87ff'),
('142', 'afaf00'),
('143', 'afaf5f'),
('144', 'afaf87'),
('145', 'afafaf'),
('146', 'afafd7'),
('147', 'afafff'),
('148', 'afd700'),
('149', 'afd75f'),
('150', 'afd787'),
('151', 'afd7af'),
('152', 'afd7d7'),
('153', 'afd7ff'),
('154', 'afff00'),
('155', 'afff5f'),
('156', 'afff87'),
('157', 'afffaf'),
('158', 'afffd7'),
('159', 'afffff'),
('160', 'd70000'),
('161', 'd7005f'),
('162', 'd70087'),
('163', 'd700af'),
('164', 'd700d7'),
('165', 'd700ff'),
('166', 'd75f00'),
('167', 'd75f5f'),
('168', 'd75f87'),
('169', 'd75faf'),
('170', 'd75fd7'),
('171', 'd75fff'),
('172', 'd78700'),
('173', 'd7875f'),
('174', 'd78787'),
('175', 'd787af'),
('176', 'd787d7'),
('177', 'd787ff'),
('178', 'd7af00'),
('179', 'd7af5f'),
('180', 'd7af87'),
('181', 'd7afaf'),
('182', 'd7afd7'),
('183', 'd7afff'),
('184', 'd7d700'),
('185', 'd7d75f'),
('186', 'd7d787'),
('187', 'd7d7af'),
('188', 'd7d7d7'),
('189', 'd7d7ff'),
('190', 'd7ff00'),
('191', 'd7ff5f'),
('192', 'd7ff87'),
('193', 'd7ffaf'),
('194', 'd7ffd7'),
('195', 'd7ffff'),
('196', 'ff0000'),
('197', 'ff005f'),
('198', 'ff0087'),
('199', 'ff00af'),
('200', 'ff00d7'),
('201', 'ff00ff'),
('202', 'ff5f00'),
('203', 'ff5f5f'),
('204', 'ff5f87'),
('205', 'ff5faf'),
('206', 'ff5fd7'),
('207', 'ff5fff'),
('208', 'ff8700'),
('209', 'ff875f'),
('210', 'ff8787'),
('211', 'ff87af'),
('212', 'ff87d7'),
('213', 'ff87ff'),
('214', 'ffaf00'),
('215', 'ffaf5f'),
('216', 'ffaf87'),
('217', 'ffafaf'),
('218', 'ffafd7'),
('219', 'ffafff'),
('220', 'ffd700'),
('221', 'ffd75f'),
('222', 'ffd787'),
('223', 'ffd7af'),
('224', 'ffd7d7'),
('225', 'ffd7ff'),
('226', 'ffff00'),
('227', 'ffff5f'),
('228', 'ffff87'),
('229', 'ffffaf'),
('230', 'ffffd7'),
('231', 'ffffff'),
('232', '080808'),
('233', '121212'),
('234', '1c1c1c'),
('235', '262626'),
('236', '303030'),
('237', '3a3a3a'),
('238', '444444'),
('239', '4e4e4e'),
('240', '585858'),
('241', '626262'),
('242', '6c6c6c'),
('243', '767676'),
('244', '808080'),
('245', '8a8a8a'),
('246', '949494'),
('247', '9e9e9e'),
('248', 'a8a8a8'),
('249', 'b2b2b2'),
('250', 'bcbcbc'),
('251', 'c6c6c6'),
('252', 'd0d0d0'),
('253', 'dadada'),
('254', 'e4e4e4'),
('255', 'eeeeee'),
]
def _str2hex(hexstr):
return int(hexstr, 16)
def _strip_hash(rgb):
if rgb.startswith('#'):
rgb = rgb.lstrip('#')
return rgb
def _create_dicts():
short2rgb_dict = dict(CLUT)
rgb2short_dict = {}
for k, v in short2rgb_dict.items():
rgb2short_dict[v] = k
return rgb2short_dict, short2rgb_dict
def short2rgb(short):
return SHORT2RGB_DICT[short]
def print_all():
""" Print all 256 xterm color codes.
"""
for short, rgb in CLUT:
sys.stdout.write('\033[48;5;%sm%s:%s' % (short, short, rgb))
sys.stdout.write("\033[0m ")
sys.stdout.write('\033[38;5;%sm%s:%s' % (short, short, rgb))
sys.stdout.write("\033[0m\n")
print ("Printed all codes.")
print ("You can translate a hex or 0-255 code by providing an argument.")
def rgb2short(rgb):
""" Find the closest xterm-256 approximation to the given RGB value.
@param rgb: Hex code representing an RGB value, eg, 'abcdef'
@returns: String between 0 and 255, compatible with xterm.
>>> rgb2short('123456')
('23', '005f5f')
>>> rgb2short('ffffff')
('231', 'ffffff')
>>> rgb2short('0DADD6') # vimeo logo
('38', '00afd7')
>>> rgb2short('3D3D3D')
('237', '3a3a3a')
>>> rgb2short('070707')
('232', '080808')
"""
rgb = _strip_hash(rgb)
parts = [ int(h, 16) for h in re.split(r'(..)(..)(..)', rgb)[1:4] ]
incs = [0x00, 0x5f, 0x87, 0xaf, 0xd7, 0xff]
if parts[0] == parts[1] == parts[2]:
gs_incs = range(0x08, 0xee, 10)
incs = sorted(incs + gs_incs + [0xee,])
res = []
for part in parts:
i = 0
while i < len(incs)-1:
s, b = incs[i], incs[i+1]
if s <= part <= b:
s1 = abs(s - part)
b1 = abs(b - part)
if s1 < b1: closest = s
else: closest = b
res.append(closest)
break
i += 1
res = ''.join([ ('%02.x' % i) for i in res ])
equiv = RGB2SHORT_DICT[ res ]
return equiv, res
RGB2SHORT_DICT, SHORT2RGB_DICT = _create_dicts()
if __name__ == '__main__':
import doctest
doctest.testmod()
if len(sys.argv) == 1:
print_all()
raise SystemExit
arg = sys.argv[1]
if len(arg) < 4 and int(arg) < 256:
rgb = short2rgb(arg)
sys.stdout.write('xterm color \033[38;5;%sm%s\033[0m -> RGB exact \033[38;5;%sm%s\033[0m' % (arg, arg, arg, rgb))
sys.stdout.write("\033[0m\n")
else:
short, rgb = rgb2short(arg)
sys.stdout.write('RGB %s -> xterm color approx \033[38;5;%sm%s (%s)' % (arg, short, short, rgb))
sys.stdout.write("\033[0m\n")