If you are using below code then it will return you transparent string code:-
// transparentColor10() method returns you 10% of color transparency
String colorCode = ColorTransparentUtils.transparentColor10(R.color.colorAccent);
// transparentColor40() method returns you 40% of color transparency
String colorCodeW = ColorTransparentUtils.transparentColor40(R.color.colorAccent);
If you want specific transparent code then you have to use below code:-
// convertIntoColor() method accept color code with transparent code.
// return you specific(which you pass into method) color transparency
String colorCodeWithSpecificCode = ColorTransparentUtils.convertIntoColor(R.color.colorAccent,45);