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Man Pages
bestfit_color(3) Allegro manual bestfit_color(3)

bestfit_color - Finds a palette color fitting the requested RGB values. Allegro game programming library.

#include <allegro.h>

int bestfit_color(const PALETTE pal, int r, int g, int b);

Searches the specified palette for the closest match to the requested color, which are specified in the VGA hardware 0-63 format. Normally you should call makecol8() instead, but this lower level function may be useful if you need to use a palette other than the currently selected one, or specifically don't want to use the rgb_map lookup table.

Returns the index of the palette for the closest match to the requested color.

makecol8(3)
version 4.4.3 Allegro

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