Flutter - How to use an RGB or HEX value for a Widget Container Color

Question

I have a container in my app that I would like to use a specific fill color for but i have bee unable to figure it out. I have no problem specifically using the Colors.grey[500] but I would like to use a color that isn't in the Material Color library. I would really like to use color: new Color.fromRGBO(200, 150, 150, 1.0) but this throws an error.

Can anyone point me in the right direction to be able to assign an RGB or a HEX value to a widget color: attribute?

The error/warning I was getting when I hover over the line of code in Android Studio:

The argument type 'Color(...color.dart)' can't be assigned to the parameter 'Color(...painting.dart)'

Rémi, you actually helped me with your comment! It's always the small things that cause the issue. The Error was `The argument type 'Color(...color.dart) can't be assigned to the parameter 'Color(...painting.dart)` - So, I realized that I had included `import 'package:color/color.dart';` - Once I removed that, it worked — casmang, Jun 16 '18 at 20:09
Nice. Consider answering your own question with your answer. And editing your question to include the exception. — Rémi Rousselet, Jun 16 '18 at 20:13

score 1 · Accepted Answer · answered Jun 16 '18 at 20:27

It looks like I had made the mistake myself. I had previously included the color.dart package shown below:

import 'package:color/color.dart';

It was causing the conflict/error I was receiving. When I would hover over the error in the Android Studio editor, I would get the warning/error:

The argument type 'Color(...color.dart)' can't be assigned to the parameter 'Color(...painting.dart)'

Once I removed that import, the code I was trying to use worked just fine.

Flutter - How to use an RGB or HEX value for a Widget Container Color

1 Answers1