There is no definitive answer to this question as it largely depends on personal preference and individual dress codes. However, generally speaking, formal pants are considered to be those that are made from a heavier fabric, such as wool, and are cut in a more tailored style. They are usually worn with a matching jacket and dress shirt, and are often seen in darker colors such as black, navy or charcoal. Formal pants can also be referred to as dress pants or trousers.
