formatHex8 method
Returns a hexadecimal string representing this color in RGBA space, such
as #f7eaba90
.
If this color is not displayable, a suitable displayable color is returned instead. For example, RGB channel values greater than 255 are clamped to 255.
Implementation
@override
String formatHex8() {
return '#${_hex(r)}${_hex(g)}${_hex(b)}${_hex((opacity.isNaN ? 1 : opacity) * 255)}';
}