colorsys module in Python

This module allows bidirectional conversions of color values between colors expressed in the RGB (Red Green Blue) and other color spaces. The three other color spaces it uses are YIQ (Luminance (Y) In-phase Quadrature), HLS (Hue Lightness Saturation) and HSV (Hue Saturation Value). All the coordinates can be between 0 and 1 except the I and Q values in the YIQ color space.

The below tables shows the functions and their purpose.

Example

import colorsys as csys
# "Electric Blue"
r, g, b = 0.47, 0.91, 1.00
print("The RGB Values for Electric Blue: ", (r, g, b))
#
y, i, q = csys.rgb_to_yiq(r, g, b)
print("YIQ", (y, i, q), "becomes", csys.yiq_to_rgb(y, i, q))
h, s, v = csys.rgb_to_hsv(r, g, b)
print("HSV", (h, s, v), "becomes", csys.hsv_to_rgb(h, s, v))
h, l, s = csys.rgb_to_hls(r, g, b)
print("HLS", (h, l, s), "becomes", csys.hls_to_rgb(h, l, s))

Output

Running the above code gives us the following result:

The RGB Values for Electric Blue: (0.47, 0.91, 1.0)
YIQ (0.7879, -0.292513, -0.06563100000000005) becomes (0.47, 0.9100000000000001, 1.0)
HSV (0.5283018867924528, 0.53, 1.0) becomes (0.47, 0.9099999999999999, 1.0)
HLS (0.5283018867924528, 0.735, 1.0) becomes (0.4700000000000001, 0.9099999999999998, 0.9999999999999999)