argb

sure.
this returns the argb from r, g and b values:

Function ARGB(R%, G%, B%)
 Local res = B + G * 256 + R * 256 * 256
 Return res
End Function

and, if you want, there are also these functions:

Function Red(RGB)
 Local res = RGB / (256 * 256) + 256
 Return res
End Function

Function Green(RGB)
 Local res = (RGB Mod (256 * 256)) / 256 + 256
 Return res
End Function

Function Blue(RGB)
 Local res = (RGB Mod (256 * 256)) Mod 256 + 256
 Return res
End Function

these functions returns an integer value.