How can I select a specific color from matplotlib colormaps?

Question

import matplotlib as plt
import seaborn as sns
pallete = sns.color_palette("tab10", 3)

In python, this gives the first three colors from the tab10 colormaps. How can I use the other colors? For example, instead of using the first three colors of tab10, I want to use the 1st, 2nd and 4th one. Or, I want to use the 1st, 6th and 8th one. Is it possible? Thank you for your kind concern.

Answer 1

Seaborn's palettes are represented as lists of rgb values. You can use these lists to create a new palette. For example:

import seaborn as sns

palette_tab10 = sns.color_palette("tab10", 10)
palette = sns.color_palette([palette_tab10[0], palette_tab10[1], palette_tab10[3]])

sns.palplot(palette_tab10)

sns.palplot(palette)

To obtain a matplotlib colormap, add as_cmap=True:

cmap = sns.color_palette([palette_tab10[0], palette_tab10[1], palette_tab10[3]], as_cmap=True)

Seaborn also allows to just provide a list of colors as the palette parameter, e.g.:

sns.palplot(['DeepSkyBlue', palette_tab10[3], 'Chartreuse'])