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Utilities to ease manipulation of matplotlib colormaps and color codecs (e.g., hex2rgb)

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Please see : for an up-to-date documentation.
version:Python 3.6, 3.7, 3.8, 3.9
contributions:Please join
issues:Please use
notebook:Please see

What is it ?

colormap package provides simple utilities to convert colors between RGB, HEX, HLS, HUV and a class to easily build colormaps for matplotlib. All matplotlib colormaps and some R colormaps are available altogether. The plot_colormap method (see below) is handy to quickly pick up a colormaps and the test_colormap is useful to see test a new colormap.


pip install colormap


  • Create your own colormap from red to green colors with intermediate color as whitish (diverging map from red to green):

    c = Colormap()
    mycmap = c.cmap( {'red':[1,1,0], 'green':[0,1,.39], 'blue':[0,1,0]})
    cmap = c.test_colormap(mycmap)
  • Even simpler if the colormap is linear:

    c = Colormap()
    mycmap = c.cmap_linear('red', 'white', 'green(w3c)')
    cmap = c.test_colormap(mycmap)
  • check out the available colormaps:

    c = Colormap()

See online documentation for details:

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