First of all, oh my goodness, what a beautiful dress! I haven't purchased mine yet, but I'm obsessed with Essense of Australia & Stella York. Definitely probably gonna end up with one of them.
Second, my colours are also navy (with blacks/silvers)... so I'm going towards a navy or silver shoe. Wedding shoes can already be pricey, so think about how much you'd wear ivory shoes after that day? I'm wanting to be able to re-wear mine for nicer occasions later on, so I'm thinking a navy or glitzy silver.
The back of your dress is full glam, so a rockin' silver/glitz shoe would totally go! Navy could also be your Something Blue though!
I would also go for ivory or blush pink however I can also see you pulling off nude, gold or light blue/sage shoes.
I would say ivory or a bold colour that will be a good accent.
The girls are wearing burgundy and the boys navy. I think rose gold will be incorporated in there somewhere but I haven’t gotten that far yet! https://www.essensedesigns.com/stella-york/wedding-dresses/6343/ this is my dress