It really depends on the make/geometry/frame type (compact or not) of the bike and the tire size. Most importantly, it depends on your inseam and body type. Some people have long torsos and short legs or vice versa. The other consideration is top tube length. I like short top tubes and generally ride and like to ride bikes that are 56cm or maybe 57cm, but my touring bike is 55cm and has stand over height of 32", which is taller than my 56cm road bike and the same height as my 57cm with 700x32c tires.

For myself, I know that ideally I like a bike that is 31.75 stand over height, but I can and will go to 32ish", which feels a bit more comfortable to ride.