Are black business socks that have dinosaurs or dogs or whatever on them acceptable? Normally the pattern would not be visible but in this case they would be.
If it's what you want and it's not hurting anyone's else, go for it.
Some people will judge you for it, but this is true of any choice. Since crocs (with socks) has become pretty common, I'd say socks and jandals are fair game pretty much anywhere so long as it's practical (probably not acceptable on a building site, unless wearing steel capped socks).
I'm in the UK and my Scottish grandad rocked the socks and sandals look to his grave (not literally). And this is a man who spent some of his life working in North African countries.
My wife wouldn't let me leave the house in socks and sandals if I wanted to (which I don't at all) so maybe it's a generation thing. Isn't the point of sandals to get the air on the bare skin on your feet?