Swift 4和4.2版本:

 self.navigationController.navigationBar.titleTextAttributes = [NSAttributedString.Key.foregroundColor: UIColor.green]

建议设置self。标题，因为这是用在推子导航栏或显示标签栏标题。

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // create and customize title view
        self.title = NSLocalizedString(@"My Custom Title", @"");
        UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectZero];
        titleLabel.text = self.title;
        titleLabel.font = [UIFont boldSystemFontOfSize:16];
        titleLabel.backgroundColor = [UIColor clearColor];
        titleLabel.textColor = [UIColor whiteColor];
        [titleLabel sizeToFit];
        self.navigationItem.titleView = titleLabel;
        [titleLabel release];
    }
}

self.navigationItem.title=@"Extras";
[self.navigationController.navigationBar setTitleTextAttributes: [NSDictionary dictionaryWithObjectsAndKeys:[UIFont fontWithName:@"HelveticaNeue" size:21], NSFontAttributeName,[UIColor whiteColor],UITextAttributeTextColor,nil]];

如果你试图改变一个页面的颜色，tewha的解决方案效果很好，但我希望能够改变每个页面的颜色。我做了一些小的修改，使它可以工作在UINavigationController上的所有页面

NavigationDelegate.h

//This will change the color of the navigation bar
#import <Foundation/Foundation.h>
@interface NavigationDelegate : NSObject<UINavigationControllerDelegate> {
}
@end

NavigationDelegate.m

#import "NavigationDelegate.h"
@implementation NavigationDelegate

- (void)navigationController:(UINavigationController *)navigationController 
      willShowViewController:(UIViewController *)viewController animated:(BOOL)animated{
    CGRect frame = CGRectMake(0, 0, 200, 44);//TODO: Can we get the size of the text?
    UILabel* label = [[[UILabel alloc] initWithFrame:frame] autorelease];
    label.backgroundColor = [UIColor clearColor];
    label.font = [UIFont boldSystemFontOfSize:20.0];
    label.shadowColor = [UIColor colorWithWhite:0.0 alpha:0.5];
    label.textAlignment = UITextAlignmentCenter;
    label.textColor = [UIColor yellowColor];
    //The two lines below are the only ones that have changed
    label.text=viewController.title;
    viewController.navigationItem.titleView = label;
}
@end

为了让Erik B的伟大解决方案在你的应用程序的不同UIViewController中更有用，我建议为UIViewController添加一个类别，并在里面声明他的setTitle:title方法。像这样，你将在所有视图控制器上得到标题颜色的改变，而不需要复制。

有一点需要注意的是，你不需要[super setTItle:tilte];在Erik的代码中，你需要显式地调用self。Title = @"my new Title "在你的视图控制器中用于这个方法被调用

@implementation UIViewController (CustomeTitleColor)

- (void)setTitle:(NSString *)title
{
    UILabel *titleView = (UILabel *)self.navigationItem.titleView;
    if (!titleView) {
        titleView = [[UILabel alloc] initWithFrame:CGRectZero];
        titleView.backgroundColor = [UIColor clearColor];
        titleView.font = [UIFont boldSystemFontOfSize:20.0];
        titleView.shadowColor = [UIColor colorWithWhite:0.0 alpha:0.5];

        titleView.textColor = [UIColor blueColor]; // Change to desired color

        self.navigationItem.titleView = titleView;
        [titleView release];
    }
    titleView.text = title;
    [titleView sizeToFit];
}

@end

对于iOS 7的使用，上面的大多数建议现在都已弃用

NSDictionary *textAttributes = [NSDictionary dictionaryWithObjectsAndKeys: 
                               [UIColor whiteColor],NSForegroundColorAttributeName, 
                               [UIColor whiteColor],NSBackgroundColorAttributeName,nil];

self.navigationController.navigationBar.titleTextAttributes = textAttributes;
self.title = @"Title of the Page";

同样，签出NSAttributedString.h以获得可以设置的各种文本属性。