diff --git a/examples/api/lib/material/radio/radio.1.dart b/examples/api/lib/material/radio/radio.1.dart
index bffb1f04fb8..13bae7f1d3a 100644
--- a/examples/api/lib/material/radio/radio.1.dart
+++ b/examples/api/lib/material/radio/radio.1.dart
@@ -64,9 +64,9 @@ class _RadioExampleState extends State<RadioExample> {
               value: RadioType.backgroundColor,
               backgroundColor: WidgetStateColor.resolveWith((Set<WidgetState> states) {
                 if (states.contains(WidgetState.selected)) {
-                  return Colors.greenAccent.withOpacity(0.5);
+                  return Colors.greenAccent.withValues(alpha: 0.5);
                 } else {
-                  return Colors.grey.shade300.withOpacity(0.3);
+                  return Colors.grey.shade300.withValues(alpha: 0.3);
                 }
               }),
             ),
diff --git a/examples/api/test/material/radio/radio.1_test.dart b/examples/api/test/material/radio/radio.1_test.dart
index 71eb52b44be..3589040c756 100644
--- a/examples/api/test/material/radio/radio.1_test.dart
+++ b/examples/api/test/material/radio/radio.1_test.dart
@@ -30,11 +30,11 @@ void main() {
     );
     expect(
       radioBackgroundColor.backgroundColor!.resolve(const <WidgetState>{WidgetState.selected}),
-      Colors.greenAccent.withOpacity(0.5),
+      Colors.greenAccent.withValues(alpha: 0.5),
     );
     expect(
       radioBackgroundColor.backgroundColor!.resolve(const <WidgetState>{}),
-      Colors.grey.shade300.withOpacity(0.3),
+      Colors.grey.shade300.withValues(alpha: 0.3),
     );
 
     final Radio<example.RadioType> radioSide = tester.widget<Radio<example.RadioType>>(