Provided by: allegro5-doc_5.2.9.1+dfsg-1.1build4_all 
      
    
NAME
       al_color_rgb_to_hsl - Allegro 5 API
SYNOPSIS
              #include <allegro5/allegro_color.h>
              void al_color_rgb_to_hsl(float red, float green, float blue,
                 float *hue, float *saturation, float *lightness)
DESCRIPTION
       Given an RGB triplet with components in the range 0..1, return the hue in degrees from 0..360 and satura‐
       tion and lightness in the range 0..1.
SEE ALSO
       al_color_hsl_to_rgb(3alleg5), al_color_hsl(3alleg5)
Allegro reference manual                                                            al_color_rgb_to_hsl(3alleg5)