Can you link me to where this SF meme started? I think I missed it
Formality of burgundy shoes - Page 2
Formal events usually go for black tie and such so naturally you need to wear black shoes as well and since you need to pair oxblood with mostly business suits it then becomes a little less formal, in that sense it would be the clothes that determine the formality of the attire and not entirely the shoes.
As for formality, well,"Formality" seems to be a tricky word around here. The two criteria that work best for me are "looks good?" and "appropriate for setting?" Generally though, in most "formal" settings, a darker shoe is more appropriate. So maybe if the burgundy is darker than the brown (or vice versa) you could say its more formal?