# cpt-city: jmn/jmn-d20 (cpt)
#
# A colourmap with monotonic luminance for simultaneous colour and
# grey-scale publications.
#
# J. McNames, "An effective color scale for simultaneous color and
# gray-scale publications," in IEEE Signal Processing Magazine,
# vol. 23, no. 1, pp. 82-96, Jan. 2006,
#
# author: James McNames
# copyright: Free to use
# year: 2009
# url: https://phillips.shef.ac.uk/pub/cpt-city/jmn
 0 255/255/255   1 255/255/255
 1 244/228/251   2 244/228/251
 2 224/207/252   3 224/207/252
 3 196/192/254   4 196/192/254
 4 162/188/252   5 162/188/252
 5 127/193/242   6 127/193/242
 6  94/206/221   7  94/206/221
 7  69/224/188   8  69/224/188
 8  56/241/144   9  56/241/144
 9   59/250/92  10   59/250/92
10   79/237/45  11   79/237/45
11  104/200/16  12  104/200/16
12   121/157/2  13   121/157/2
13   127/112/0  14   127/112/0
14    122/72/6  15    122/72/6
15   105/40/15  16   105/40/15
16    80/18/22  17    80/18/22
17     51/5/23  18     51/5/23
18     23/0/15  19     23/0/15
19       0/0/0  20       0/0/0