| Look in the back of your owners manual (or on ducati.com for the owners manual for your model year if you don't have the actual book). It'll tell you the paint colour and code.
Then go to a proper paint factor and they'll look up the code and make a match for you. Halfrauds do this as well apparently, but I've never tried them.
PPG are the original paint manufacturer that Ducati use, so if you can find a PPG stockist that will give you the closest match. Try and get some guarantees though, I went to a paint factor who didn't give me the greatest confidence when they had to 'phone a friend' for the weights of paints in the Ducati Anniversary Red colour (that's what my bike is)...it turned out they mixed me Ducati Rosso as seen on earlier Paso's and the like. Try and make sure they'll give you a free replacement if they get it wrong. A very, very small colour mismatch shouldn't matter because you can blend it in but a big mismatch, like I have is instantly noticeable | 
Jools
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