you can see it on the sticker, 294/5 left side bottom.
294 is the main designation for lazurblau-metallic and the 5 at the end is the fine nuance of this colour.
I have the same sticker here at my desk from my last parts car E32 750iL
I went to a car accessory shop with the BMW code number, they mixed the same color for my dolphin grey 750 within 15 minutes. Could either get it in a bottle or in spray can.
No need to buy from BMW if they do not have it on stock, They mix it to a perfect match.