good question.

 

That's like the M3 light blue ...

 

I found this on a Isetta page:
http://webs.montevideo.com.uy/isettauy/paint.html
...dont know if BMW still makes this color but it does have a Dupont color code.

Color Name (English): Bavarian Blue
BMW Color Name: Bayerischblau
BMW Color Code: 524
Yr(s) used/introduced: 1955-1957
Standox Color Code: 25556
Dupont Color Code: 78387D & 78387A

Since there is two there for Dupont, does that mean that I need to have both and then have them mixed to create one color?

 

I went to an automotive paint shop once to get some paint matched for an old car, and they had books with tons and tons of paint samples. Maybe go to a paint shop and see if you can compare colors.