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An accent color (tint color in UIKit) is a color that applies to most built-in views and controls in your SwiftUI app.
An accent color is a simple and unified way to theming your app. In this article, we will learn how to set a global accent color for your app using Asset Catalog.
Here is an example of an app that uses pink color as the accent color.
If you create a new SwiftUI project, Xcode will automatically include a default Asset Catalog named
Assets.xcassets with an
AccentColor color set in it. You don't have to do anything in this case.
If your app doesn't have an
AccentColor color set, your project might create from a different Xcode version. But don't worry; you can manually create it yourselves.
To manually create an accent color set, you do the following steps.
- Select any asset catalog in your project (It can be any name).
- Click the Add button (+) at the bottom.
- In the pop-up menu, select "Color Set".
- Double-click on the newly created color set and named it whatever you want. But I suggest you name it AccentColor to align with the default one Xcode created.
- Click on the project root and go to the Build Settings tab. Then, search for the "Global Accent Color Name" build setting.
- Double-click the build setting, and type in the name of the accent color set that you created in Step 4.
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Xcode will use the color you specify in the accent color set you created in the previous section as your app's accent color.
To change the accent color of your app, you do the following steps.
- Select an asset catalog where your accent color set is located.
- Select the accent color set.
- In the Appearances field in the Attributes Inspector (The right-most panel), you can set a different accent color for each appearance, e.g., light and dark. As an example, I select "Any, Dark", which will create two placeholders to set colors, one for a dark appearance and one for a non-dark mode.
- Select a content field under the Color section to select the color you want. In this case, I set pink for light appearance and green for dark appearance.
That's all you need to do to change the accent color of your app.
With this setting, our app will use green for a dark appearance and pink otherwise.
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