Function lightness

backtesting/_plotting.py:106–110

(color, lightness=.94)

def lightness(color, lightness=.94):
    rgb = np.array([color.r, color.g, color.b]) / 255
    h, _, s = rgb_to_hls(*rgb)
    rgb = (np.array(hls_to_rgb(h, lightness, s)) * 255).astype(int)
    return RGB(*rgb)


_MAX_CANDLES = 10_000