Easily create your own colormaps

Utility functions for working with colors in Python.

Setup

If you don't have matplotlib and numpy installed with Python 3:

pip3 install -r requirements.txt

Usage

1. Import what we need:

import matplotlib.pyplot as plt
import color_utils

2. Define your colors with their hex codes (you can omit '#' and use 3 digit shorthand) in the order you wish them to appear:

my_colors = ['#800080', '#FFA500', '#FFFF00']

3. Convert them to RGB values matplotlib can use (on [0, 1]):

rgbs = color_utils.hex_to_rgb_color_list(my_colors)

4. Create your colormap:

my_cmap = color_utils.blended_cmap(rgbs)

5. Visualize your colormap:

cbar = color_utils.draw_cmap(my_cmap)
plt.show()

6. The colormap: