If i give two colors
UIColor *color1 = [UIColor blackColor];
UIColor *color2 = [UIColor whiteColor];
A straightforward way of finding the "in between" is to average the four components, like this:
UIColor *color1 = [UIColor blackColor]; UIColor *color2 = [UIColor whiteColor]; CGFloat r1, r2, g1, g2, b1, b2, a1, a2; [color1 getRed:&r1 green:&g1 blue:&b1 alpha:&a1]; [color2 getRed:&r2 green:&g2 blue:&b2 alpha:&a2]; UIColor *avg = [UIColor colorWithRed:(r1+r2)/2.0f green:(g1+g2)/2.0f blue:(b1+b2)/2.0f alpha:(a1+a2)/2.0f];
Note that this produces a midpoint RGBA color space, which is only one of many possible color spaces. Averaging components in other color spaces will lead to a different result.