NAME

       al_color_rgb_to_cmyk - Allegro 5 API

SYNOPSIS

              #include <allegro5/allegro_color.h>

              void al_color_rgb_to_cmyk(float red, float green, float blue,
                 float *cyan, float *magenta, float *yellow, float *key)

DESCRIPTION

       Each RGB color can be represented in CMYK with a K component of 0 with the following formula:

              C = 1 - R
              M = 1 - G
              Y = 1 - B
              K = 0

       This  function will instead find the representation with the maximal value for K and minimal color compo‐
       nents.

SEE ALSO

       al_color_cmyk(3alleg5), al_color_cmyk_to_rgb(3alleg5)

Allegro reference manual                                                           al_color_rgb_to_cmyk(3alleg5)