How to get RGB values from UIColor?

Question

I\'m creating a color object using the following code.

curView.backgroundColor = [[UIColor alloc] initWithHue:229 saturation:40 brightness:75 alpha:1];
         


        

Answer 1

Swift 3 version of David Rees answer:

extension UIColor {

    var redValue: CGFloat{
        return cgColor.components! [0]
    }

    var greenValue: CGFloat{
        return cgColor.components! [1]
    }

    var blueValue: CGFloat{
        return cgColor.components! [2]
    }

    var alphaValue: CGFloat{
        return cgColor.components! [3]
    }
}