:mod:!colorsys --- Conversions between color systems

.. module:: colorsys :synopsis: Conversion functions between RGB and other color systems.

Source code: :source:Lib/colorsys.py

---

The :mod:!colorsys module defines bidirectional conversions of color values between colors expressed in the RGB (Red Green Blue) color space used in computer monitors and three other coordinate systems: YIQ, HLS (Hue Lightness Saturation) and HSV (Hue Saturation Value). Coordinates in all of these color spaces are floating-point values. In the YIQ space, the Y coordinate is between 0 and 1, but the I and Q coordinates can be positive or negative. In all other spaces, the coordinates are all between 0 and 1.

.. seealso::

More information about color spaces can be found at https://poynton.ca/ColorFAQ.html and https://www.cambridgeincolour.com/tutorials/color-spaces.htm.

The :mod:!colorsys module defines the following functions:

.. function:: rgb_to_yiq(r, g, b)

Convert the color from RGB coordinates to YIQ coordinates.

.. function:: yiq_to_rgb(y, i, q)

Convert the color from YIQ coordinates to RGB coordinates.

.. function:: rgb_to_hls(r, g, b)

Convert the color from RGB coordinates to HLS coordinates.

.. function:: hls_to_rgb(h, l, s)

Convert the color from HLS coordinates to RGB coordinates.

.. function:: rgb_to_hsv(r, g, b)

Convert the color from RGB coordinates to HSV coordinates.

.. function:: hsv_to_rgb(h, s, v)

Convert the color from HSV coordinates to RGB coordinates.

Example::

import colorsys colorsys.rgb_to_hsv(0.2, 0.4, 0.4) (0.5, 0.5, 0.4) colorsys.hsv_to_rgb(0.5, 0.5, 0.4) (0.2, 0.4, 0.4)