Get the right color in iOS7 translucent navigation bar

Question

How can I get the right coloring for my translucent navigation bars in iOS 7? The navigation bar just adjusts the given color to a much brighter one. Changing brightness or

Answer 1

Just use this simple barTintColor Calculator:

http://htmlpreview.github.io/?https://github.com/tparry/Miscellaneous/blob/master/UINavigationBar_UIColor_calculator.html