You tempt me to write a hub as long as my arm to answer this :) Maybe that was your intention, to tempt someone?
Short answer is: Depends on the black suit (fabric, cut), and it depends what type of shirt and tie you wear with it (and of course the shoes and belt), but fundamentally it depends on the job you're interviewing for.
I'm thinking, a PR position in a hip club, you wouldn't frown if the interviewee appears with a black suit. Would you? Then again, you'd probably frown if the position was high school teacher.