How to change TextFormField input text color in Flutter

In this article, we will explore how to change the input text color of a TextFormField widget in Flutter. The TextFormField is one of the most commonly used widgets in Flutter for creating text-based UI components such as login forms and search bars.

The Default Behavior

When you create a TextFormField widget, it inherits its appearance from the Material Design theme of your app. The default color of the input text is determined by the textTheme property of your app’s theme.

Changing the Input Text Color

To change the input text color of a TextFormField, you can use the style property. This allows you to apply a custom style to the text field, including changing its color.

TextFormField(
  style: TextStyle(color: Colors.white),
)

In this example, we are using a TextStyle widget with a white color to change the input text color of the TextFormField. You can replace Colors.white with any other valid Dart color value.

Using the Theme’s TextTheme

If you are trying to change the input text color from within your app’s Material Design theme, you can use the textTheme property. Specifically, you can modify the subtitle1 style of the text theme.

MaterialApp(
  ...
  theme: ThemeData(
    ...
    textTheme: const TextTheme(
      ...
      subtitle1: const TextStyle(
        color: Colors.red, // <-- TextFormField input color
      ),
    ),
  ),
)

In this example, we are setting the subtitle1 style to red. This will change the input text color of all TextFormField widgets in your app that inherit from the Material Design theme.

Conclusion

In conclusion, changing the input text color of a TextFormField widget in Flutter is a straightforward process. You can use the style property to apply a custom style, or modify your app's Material Design theme using the textTheme property.

We hope this article has been helpful in demonstrating how to change the input text color of a TextFormField. If you have any questions or need further assistance, please don't hesitate to ask!