I cant change the color of primarySwatch

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here in code I set yellow but its not changing

2

For historical reasons, instead of using a colorSchemeSeed or colorScheme , you can provide either a primaryColor or primarySwatch to construct the colorScheme , but the results will not be as complete as when using generation from a seed color.

Consider using the full Material3 interface instead of a legacy control.

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3

thank you bro i ill use it

4

If you want to custom your PrimarySwatch, I recommend you to add this function in your helper folder.

/// The PrimarySwatch was still set to a color generated by Flutter.
  /// Since you don't have to pass a color but a material color, you need this method.
  /// You could also do this manually for all shades. I found this solution better,
  /// because we can continue to create MaterialColors with it.
  static MaterialColor createMaterialColor(Color color) {
    List strengths = <double>[.05];
    final swatch = <int, Color>{};
    final int r = color.red, g = color.green, b = color.blue;

    for (int i = 1; i < 10; i++) {
      strengths.add(0.1 * i);
    }
    for (var strength in strengths) {
      final double ds = 0.5 - strength;
      swatch[(strength * 1000).round()] = Color.fromRGBO(
        r + ((ds < 0 ? r : (255 - r)) * ds).round(),
        g + ((ds < 0 ? g : (255 - g)) * ds).round(),
        b + ((ds < 0 ? b : (255 - b)) * ds).round(),
        1,
      );
    }
    return MaterialColor(color.value, swatch);
  }
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5

This seems like one of the things that might be in material_color_utilities | Dart package