blue constant Null safety
Implementation
static const MaterialColor blue = MaterialColor(
_bluePrimaryValue,
<int, Color>{
50: Color(0xFFE3F2FD),
100: Color(0xFFBBDEFB),
200: Color(0xFF90CAF9),
300: Color(0xFF64B5F6),
400: Color(0xFF42A5F5),
500: Color(_bluePrimaryValue),
600: Color(0xFF1E88E5),
700: Color(0xFF1976D2),
800: Color(0xFF1565C0),
900: Color(0xFF0D47A1),
},
);