So let’s say you decided to throw on a navy blazer and you really wanted to wear those new navy pants you just bought. Here’s my advice: Don’t do it! If you’re going to wear a sport coat, wear some contrasting pants. Grey or khaki colors will do the trick. If you want to wear a jacket and pants that match, wear a suit, otherwise, stick to my advice and don’t try and match things that weren’t meant to match.