flashisobar's Blog

// RGB
UIColor *randomRGBColor = [[UIColor alloc] initWithRed:arc4random()%256/256.0 green:arc4random()%256/256.0 blue:arc4random()%256/256.0 alpha:1.0];

// HSB
UIColor *randomHSBColor = [[UIColor alloc] initWithHue:arc4random()%256/256.0 saturation:(arc4random()%128/256.0)+0.5 brightness:(arc4random()%128/256.0)+0.5 alpha:1.0];