Color Scheme Generator

import colorsys

def hex_to_hsl(hex_color):
    hex_color = hex_color.lstrip('#')
    r, g, b = [int(hex_color[i:i+2], 16)/255 for i in (0,2,4)]
    h, l, s = colorsys.rgb_to_hls(r, g, b)
    return int(h*360), int(s*100), int(l*100)

def hsl_to_hex(h, s, l):
    r, g, b = colorsys.hls_to_rgb(h/360, l/100, s/100)
    return '#{:02x}{:02x}{:02x}'.format(int(r*255), int(g*255), int(b*255))

def complementary(hex_color):
    h, s, l = hex_to_hsl(hex_color)
    return [hex_color, hsl_to_hex((h + 180) % 360, s, l)]

print(complementary('#6366f1'))