Bianca is certainly the best of its name family (though Blanche is pretty in French; I've never liked Blanca). It's elegant but also with a lot of oomph.
Despite it being a traditional Italian name (aside from its Shakespearean history), I somehow grew up in a heavily Italian area without meeting a single Italian girl / woman named Bianca. This isn't to say I didn't meet any Biancas - I did - they were just universally Black / African-American (other than one "Vianca" who was Hispanic). It was common enough that in looking at Bianca on this site I'm surprised African-American isn't listed as a usage of the name.
The above comments aren't meant to detract from the name, by any means. I just wanted to provide some context for present-day usage of the name in the United States.
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www.behindthename.com/pnl/69381www.behindthename.com/pnl/69381/117507www.behindthename.com/pnl/69381/109399hwww.behindthename.com/pnl/69381/132018http://greens-end.myminicity.com/