如何以编程方式获得ios7默认的蓝色?

I'm creating custom elements in my app and want to match the look and feel of the new iOS. iOS 7 introduced to us a very common lighter blue color, the default color or tint for several elements, including the system button, segmented control, etc. They've made it easy to select the color using IB, as seen here:I'm creating custom elements in my app and want