Map<int, Color> blueAccent = const {100 : const Color(0xFF82B1FF), 200 : const Color(0xFF448AFF), 400 : const Color(0xFF2979FF), 700 : const Color(0xFF2962FF)}

The blue accent swatch.

 new Icon(
   icon: Icons.widgets,
   color: Colors.blueAccent[400],
 ),

See also:

  • blue, the corresponding primary colors.
  • of, which allows you to select colors from the current theme rather than hard-coding colors in your build methods.