We have a traditional kitchen but similar colors to yours---white Shaker perimeter and dark cherry island. Our perimeter counters are a dark green granite with a lot of "movement" and the island is a white guartzite called luce di luna. The quartzite is a real stone, slightly harder than granite I'm told but I'm not sure, and at least in our area a bit more expensive. It is, however, very calm and I could see it in a modern kitchen such as you describe. When we priced out granite, quartzite, and zodiaq we found the price difference for our kitchen was really rather negligible so we went with the granite and the quartzite but if the zodiaq---I think it was misty carrera that we were considering---had been much less we would have used that instead of the quartzite. HTH.

The raven looks like a dark steel blue gray, it might be nice with a warm rich medium brown. What about Craserstone Bedrock for the island? It looks like it has small flecks of a dark gray in it and although it's more busy than the raven, it might be less than most granites.

I think it all comes down to how much you want the island to be incorperated in the kitchen- to blend in more or to really stand out.