Too much darkness. What are appliances? I see no reason for a dark sink in white marble.

Appliances are black stainless. It’s an open floor concept with three huge picture windows on west wall, as well as a sliding glass and dining room window all in the area too. White trim, Anew gray walls.

I’m afraid a brushed nickel would be out of place?

Darker yet. And cabinet hardware is then what? I think black stainless is a far less "forever" choice than stainless. Ditto a dark sink and faucet midst the bright marble.. A kitchen benefits from some gleam, no matter how rustic in intent, or richly /formally dark in intent. JMHO.

Also despite how naturally light it may be.

Why a dark sink in a white counter , I would always do regular stainless instead of a color that probably will not be available just about the time the fridge dies.Same with other metal finishes IMO a stainless sink and stainless appliances and stainless faucet and cabinet pulls would have been my choices.Keep things simple ..

No hardware picked out yet. I can go stainless faucets and sink as well, I don’t think it will be out of place if went with brushed nickel hardware. Can’t really change the appliances as they are already here. Thanks!