I asked at my local Bmw dealer, Bmw Sweden, Bmw Group Germany and finally Bmw Group Classic in Munich without success. They say: "we have no technical information regarding the color of interior body or chassis parts".
I also tried to get help from a car paint expert by scanning the color but they couldn't help because the paint surface was too small.
I ended up buying three similar colors in spray cans and used the one that was most similar when comparing to the car. The color was still not 100% but good enough for the small spot I needed to fix.
