NSBackgroundColorAttributeName-like attribute in NSAttributedString on iOS?

I was planning on using NSAttributedString to highlight portions of strings with the matching query of a user's search. However, I can't find an iOS equivalent of NSBackgroundColorAttributeName—there's no kCTBackgroundColorAttributeName. Does such a thing exist, similar to the way NSForegroundColorAttributeName becomes kCTForegroundColorAttributeName?