Hush or I steal your new shoes. At least you got boxes from the guy in the blue shorts this week.
I'm useless with any jeans-related fit as everyone else here will gladly affirm, but FWIW I think dark jeans and a cream jacket is a nice combination and in that context, the strong contrast between the black knit/white shirt seems just fine.
In fact, I greatly prefer a white shirt with a black knit tie to your thought of using a blue oxford with it instead.
I also believe that both dark and light ties can work with cream jackets; it just creates a different effect so depends on other elements of the outfit as which work best in any given look.