1:mod:`colorsys` --- Conversions between color systems 2===================================================== 3 4.. module:: colorsys 5 :synopsis: Conversion functions between RGB and other color systems. 6.. sectionauthor:: David Ascher <da@python.net> 7 8**Source code:** :source:`Lib/colorsys.py` 9 10-------------- 11 12The :mod:`colorsys` module defines bidirectional conversions of color values 13between colors expressed in the RGB (Red Green Blue) color space used in 14computer monitors and three other coordinate systems: YIQ, HLS (Hue Lightness 15Saturation) and HSV (Hue Saturation Value). Coordinates in all of these color 16spaces are floating point values. In the YIQ space, the Y coordinate is between 170 and 1, but the I and Q coordinates can be positive or negative. In all other 18spaces, the coordinates are all between 0 and 1. 19 20.. seealso:: 21 22 More information about color spaces can be found at 23 http://www.poynton.com/ColorFAQ.html and 24 https://www.cambridgeincolour.com/tutorials/color-spaces.htm. 25 26The :mod:`colorsys` module defines the following functions: 27 28 29.. function:: rgb_to_yiq(r, g, b) 30 31 Convert the color from RGB coordinates to YIQ coordinates. 32 33 34.. function:: yiq_to_rgb(y, i, q) 35 36 Convert the color from YIQ coordinates to RGB coordinates. 37 38 39.. function:: rgb_to_hls(r, g, b) 40 41 Convert the color from RGB coordinates to HLS coordinates. 42 43 44.. function:: hls_to_rgb(h, l, s) 45 46 Convert the color from HLS coordinates to RGB coordinates. 47 48 49.. function:: rgb_to_hsv(r, g, b) 50 51 Convert the color from RGB coordinates to HSV coordinates. 52 53 54.. function:: hsv_to_rgb(h, s, v) 55 56 Convert the color from HSV coordinates to RGB coordinates. 57 58Example:: 59 60 >>> import colorsys 61 >>> colorsys.rgb_to_hsv(0.2, 0.4, 0.4) 62 (0.5, 0.5, 0.4) 63 >>> colorsys.hsv_to_rgb(0.5, 0.5, 0.4) 64 (0.2, 0.4, 0.4) 65