al_set_blend_color - Man Page

#include <allegro5/allegro.h>

void al_set_blend_color(ALLEGRO_COLOR color)

Sets the color to use for blending when using the ALLEGRO_CONST_COLOR or ALLEGRO_INVERSE_CONST_COLOR blend functions. See al_set_blender(3) for more information.

al_set_blender(3), al_get_blend_color(3)

5.1.12

al_get_blend_color(3), al_set_blender(3).