Bare minerals original foundation

I bought these on Poshmark as a set, both new and unopened. When I opened the container on the left, I noticed it was darker than the other one. The color on the container says that it is medium, but I think it’s more like a medium tan. I used it one time and it was too dark so it is full with the exception of the one use. See last picture for comparison of color. They are both “medium”. The one for sale is the darker one on the left side