How to convert a color integer to a hex String in Android?

The mask makes sure you only get RRGGBB, and the %06X gives you zero-padded hex (always 6 chars long):

String hexColor = String.format("#%06X", (0xFFFFFF & intColor));

Try Integer.toHexString()

Source: In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros?