A bit of advice to the untrained: Be careful when wearing a black button down shirt. It is very, very easy to look like a gigantic tool wearing a black button down. Here is my advice on how to do it smoothly so you are at no risk for looking like a wiener:
1. With Jeans: Don’t ever do that! Never ever!
2. With a Grey suit: Black is the ultimate compliment to grey. If you wear this combo, do not wear a tie.
3. With a black suit: Nothing screams “Vinny Chase” more than a black suit, on black shirt, on black tie. Some people call it the “Johnny Cash” look but I prefer to be a bit more modern with the terminology. Feel free to go tieless as well, but if you do choose a tie, go with black.
4. With a Tie: Do not ever try and wear a colorful tie with a black shirt. That means don’t wear anything but a black tie with a black shirt. The only slight exception is a charcoal grey tie, but even that flirts with total doucheyness. No white, no colors, never!!