How do I use hexadecimal color strings in Flutter?

Thanks for asking this question, simples solution is as:

**// Color to Hex String**

colorToHexString(Color color) {
return '#FF${color.value.toRadixString(16).substring(2, 8)}';
}

**// Hex String to Color**

hexStringToColor(String hexColor) {
hexColor = hexColor.toUpperCase().replaceAll("#", "");
if (hexColor.length == 6) {
hexColor = "FF" + hexColor;
}
return Color(int.parse(hexColor, radix: 16));
}

**// How to call function**

String hexCode = colorToHexString(Colors.green);
Color bgColor = hexStringToColor(hexCode);
print("$hexCode = $bgColor");

Enjoy code and help others :)