Burgundy is more fun, and would be harder to find again. Tan matches more, bookends, and is elongating. It’s been a few years since I’ve seen this style - not exactly, but what I call sock booties. Lower heeled like this is even more rare.

ETA: I'm going to keep the tan ones and return the burgundy. I don't see needing two of these, but if I catch it on a more marked down sale at some point, I will reconsider.