import 'package:flutter/material.dart'; extension StringColor on String { static final _colorCache = >{}; Color _getColorLight(double light) { var number = 0.0; for (var i = 0; i < length; i++) { number += codeUnitAt(i); } number = (number % 12) * 25.5; return HSLColor.fromAHSL(1, number, 1, light).toColor(); } Color get color { _colorCache[this] ??= {}; return _colorCache[this]![0.35] ??= _getColorLight(0.35); } Color get darkColor { _colorCache[this] ??= {}; return _colorCache[this]![0.2] ??= _getColorLight(0.2); } Color get lightColor { _colorCache[this] ??= {}; return _colorCache[this]![0.7] ??= _getColorLight(0.7); } }