How to style the font in a UINavigationBar's title

Swift version: 5.2

Paul Hudson @twostraws May 28th 2019

If you're setting title's in a navigation bar, you can customize the font, size and color of those titles by adjusting the titleTextAttributes attribute for your navigation bar.

To do this on a single bar just set it directly whenever you want to; to change all bars, set it inside your app delegate using the appearance proxy for UINavigationBar so that it kicks in before the first bar is loaded.

Here's an example that makes title text be 24-point Georgia Bold in red:

let attrs = [
    NSAttributedString.Key.foregroundColor: UIColor.red,
    NSAttributedString.Key.font: UIFont(name: "Georgia-Bold", size: 24)!
]

UINavigationBar.appearance().titleTextAttributes = attrs