这适用于我在Swift:

navigationController?.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.white]

Swift 4和4.2版本:

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

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

要设置标题的字体大小，我使用了以下条件..也许对任何人都有帮助

if ([currentTitle length]>24) msize = 10.0f;
    else if ([currentTitle length]>16) msize = 14.0f;
    else if ([currentTitle length]>12) msize = 18.0f;

这是一个相当老的线程，但我认为提供的答案设置的颜色，大小和垂直位置的导航栏标题iOS 7及以上

颜色和尺寸

 NSDictionary *titleAttributes =@{
                                NSFontAttributeName :[UIFont fontWithName:@"Helvetica-Bold" size:14.0],
                                NSForegroundColorAttributeName : [UIColor whiteColor]
                                };

垂直位置

[[UINavigationBar appearance] setTitleVerticalPositionAdjustment:-10.0 forBarMetrics:UIBarMetricsDefault];

设置Title并分配属性字典

[[self navigationItem] setTitle:@"CLUBHOUSE"];
self.navigationController.navigationBar.titleTextAttributes = titleAttributes;

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