A monochrome collared shirt works great for business wear. A solid color collared shirt works great with a blazer or a suit jacket. A colored collared shirt brings a nice new look to the whole. You can get a little twist on the collared shirt with different colored buttons.
Ceremonial collared shirts made of wonderful fabrics are suitable with a suit. For example, for the groom, a white collared shirt with a slight sheen is the perfect choice with the suit.