Function to lighten any color in matplotlib

lighten_color.py

def change_brightness(color, amount=1):
    """
    Changes the brightness of the given color by multiplying luminosity
    by the given amount.
    
    Input can be a matplotlib color string, hex string, or RGB tuple.
    
    The color gets brighter when amount > 1 and darker when amount < 1.
    The resulting luminosity is restricted to [0,1].

    Examples:
    >> lighten_color('g', 0.3)
    >> lighten_color('#F034A3', 0.6)
    >> lighten_color((.3,.55,.1), 0.5)
    """
    # adapted from
    # https://gist.github.com/ihincks/6a420b599f43fcd7dbd79d56798c4e5a
    # https://stackoverflow.com/a/49601444/9655481

    import colorsys
    import matplotlib.colors as mc
    import numpy as np

    try:
        c = mc.cnames[color]
    except:
        c = color

    c = np.array(colorsys.rgb_to_hls(*mc.to_rgb(c)))
    hls = (c[0], max(0, min(1, amount * c[1])), c[2])
    rgb = colorsys.hls_to_rgb(*hls)
    return mc.to_hex(rgb)