Although they don’t match, black pants and a blue shirt are frequently worn together. The colour of blue that is used will largely determine how well black and blue blend.
While pairing a light blue shirt with black pants usually doesn’t look well, doing so with a darker shade of blue is really hot right now. Given that both black and blue are neutral hues, they go well together.
The ensemble works equally well for daytime office wear as it does for day-to-evening looks, and it has a polished, sophisticated appearance. When wearing a black belt and black pants with a blue shirt, one should also wear black shoes.