Don't worry about paint codes, take your bike to a reputable painter that has a photo spectrometer (may go by a different name in your neck of the woods) then they can match the paint to your bike, often paint fades or discolours over time and can be different on different surfaces like plastic vs metal for instance. That way you should get a perfect match.
IME the PPG paint codes often don't relate to other brands or even PPG for that matter!
IME the PPG paint codes often don't relate to other brands or even PPG for that matter!