cmap = mpl.colors.ListedColormap([ '#415aae', # middle of midnightblue and slateblue '#5e6acd', # from slateblue '#1e90e8', # from dodgerblue '#63c4ee', # rfom darkturquoise '#a2ebe4', # from paleturquoise '#d5f2ed', # from honeydew '#fff5d8', # from lemonchiffon '#faddc0', # from moccasin 'lightsalmon', 'tomato', # from tomato '#dd4f35', # middle of tomato and firebrick 'firebrick',]) c_under = 'midnightblue' = 'maroon'