fluffychat/lib/utils/color_value.dart

import 'package:flutter/widgets.dart';

extension ColorValue on Color {
  int get hexValue {
    return _floatToInt8(a) << 24 |
        _floatToInt8(r) << 16 |
        _floatToInt8(g) << 8 |
        _floatToInt8(b) << 0;
  }

  static int _floatToInt8(double x) {
    return (x * 255.0).round() & 0xff;
  }
}