Cankles-McJeggings Black all the way imo.
I’m generally in agreement, in that very dark with white is proper - as opposed to some absolute BERK who busts a red ‘tux’ (it’s usually an American) or something. However, midnight blue has always been acceptable if you want something a tiny bit different, and apparently the original garms favoured by Edward VII were midnight blue rather than black, so you always have that defence if someone tries to rip you for it.