iOS13 - problem with navigationBar title color

func manageNavigationBar(){
        if #available(iOS 13.0, *){

            let navBarAppearance = UINavigationBarAppearance()
            navBarAppearance.configureWithOpaqueBackground()
            navBarAppearance.backgroundColor = UIColor(red: 0.6157, green: 0.3412, blue: 0.8588, alpha: 1.0)
            navBarAppearance.titleTextAttributes = [.foregroundColor: UIColor.white]
            navBarAppearance.largeTitleTextAttributes = [.foregroundColor: UIColor.white]
            UINavigationBar.appearance(whenContainedInInstancesOf: [UINavigationController.self]).standardAppearance = navBarAppearance
            UINavigationBar.appearance(whenContainedInInstancesOf: [UINavigationController.self]).scrollEdgeAppearance = navBarAppearance
        }
    }

//call this function in your AppDelegate also in a class where you want navigation to work like this

In iOS 13, I change the title color like this

UINavigationBarAppearance *appearance = [self.navigationController.navigationBar standardAppearance];
appearance.titleTextAttributes = @{NSForegroundColorAttributeName: [UIColor whiteColor]};
self.navigationController.navigationBar.standardAppearance = appearance;
self.navigationController.navigationBar.scrollEdgeAppearance = appearance;