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Someone here will probably know the code, but... alternatives would be to take it to your local auto paint supply & they can shoot the trin & generate a formula, or... there are some spray-can wheel paints that are a very close match available at most any place that sells spray-can paint. Just make sure you thoroughly sand the parts down & use a good primer, & sand that before painting. Otherwise, the paint may pull off when you tape it to paint the car.
At a paint shop, they can measure the color with a colorimeter and mix the paint with near-perfect accuracy. You also need clear coat and proper surface preparation with the right abrasives, etc. (the list goes on, including a paint booth). But it is possible to paint it yourself; however, it won't be the same as a paint workshop. I took my XK8 to a paint workshop for a few imperfections; it's a task I haven't yet dared to attempt (yet). I have completed a course in automotive painting and I know that it is a complex task involving skill and technical equipment. However, in some places it is possible for the public to rent a paint booth by the hour to do this work ourselves.