brewer2mpl is a pure Python module for accessing colorbrewer2.org color maps from Python. With brewer2mpl you can get the raw RGB colors of all 165 colorbrewer2.org color maps. The color map data ships with brewer2mpl so no internet connection is required.
For more information and to view some of the color maps see the wiki at https://github.com/jiffyclub/brewer2mpl/wiki.
colorbrewer2.org has 3 map types: sequential, diverging, and qualitative. Each color map has between 3 and 12 defined colors.
Listing Color Maps
List all of the available color maps:
List maps by type:
Filter by number of colors defined:
Get a Color Map
Color maps are accessed by name, type, and number:
bmap = brewer2mpl.get_map('Paired', 'Qualitative', 5)
If you want a color map reversed from how it is given by colorbrewer2.org set the reverse keyword to True:
bmap = brewer2mpl.get_map('Paired', 'Qualitative', 5, reverse=True)
Color maps are represented by BrewerMap objects. They have a few useful attributes:
# colorbrewer2.org url.
# Copy this into your browser to see the map at colorbrewer2.org.
# colorbrewer2.org name
# number of defined colors
# colors as a list of RGB 0-255 triplets
# colors as a list of hex strings
# colors as a list of RGB 0-1 triplets (as used by matplotlib)
# matplotlib color map
The matplotlib color maps are created using matplotlib.colors.LinearSegmentedColormap.from_list. If you want to pass options to that method use the BrewerMap.get_mpl_colormap method:
cmap = bmap.get_mpl_colormap(N=1000, gamma=2.0)