JanHomann

import matplotlib.pyplot as plt
import matplotlib.colors as mcolors

def plot_colormap():
    colors = dict(mcolors.BASE_COLORS, **mcolors.CSS4_COLORS)
    
    # Sort colors by hue, saturation, value and name.
    by_hsv = sorted((tuple(mcolors.rgb_to_hsv(mcolors.to_rgb(color))), name)
                    for name, color in colors.items())
    sorted_names = [name for hsv, name in by_hsv]