Does anyone know the RAL number for a 2002 B37? Link for vendor in EU would be nice too.
I think you'll find it's Ral 9016.
A determined Google will confirm.
For BAV36 2002,
White: RAL 9016
Blue: RAL 5020
B38 2003
After a google search I tried RAL 9016. It was not a good match, too grey.
The best match so far has been 50% mix of pigments from Scott Bader Super White & White 337.
After 15 years or so, it's inevitable that the original gelcoat will have changed colour slightly. To match the current colour properly requires skill. If you need to do a very visible repair, it might be worth asking a professional gelcoat repairer, he'd be able to match it. I had this done on my previous boat, a 20 year old Hallberg-Rassy, and the repair was invisible.