Since LB9A been a VW color for many years now there's quite a few variants of the color. To explain it easy, the very first color of LB9A from the 1870-something (

)is called Standard recipe. Over the years the mixes at VW differ from that Standard recipe (for many different reasons). Then they are called after what shade they differ from that original Standard recipe. So there is a lighter one, a darker one, a greener one and a yellower one by now. And far more. So depending on what variant you got on your car you can expect the spray can you got from VW may not correspont coreclty to your variant of paint on your car.
Did that make any sense?
On the photo you posted, I can also se that the left door is more yellow on the left side than the right side and the right door is lighter/whiter than the left side of the left door. Is your van resprayed at some point or is it just the photo and lighting that makes this deviation in color?
It could also be that you have put on too much clear coat. Clear coat is often a little yellowish and if you put on too much the color tend to reach for a more yellowish tone.