[=WoR=Varth]

pawn Код:

stock RGBAToHex(r, g, b, a) //By Betamaster
{
    return (r<<24 | g<<16 | b<<8 | a);
}

stock HexToRGBA(colour, &r, &g, &b, &a) //By Betamaster
{
    r = (colour >> 24) & 0xFF;
    g = (colour >> 16) & 0xFF;
    b = (colour >> 8) & 0xFF;
    a = colour & 0xFF;
}

??

Or maybe ****** topic can help you.
https://sampforum.blast.hk/showthread.php?tid=200876