Dark roast coffee is a dark brown color and often has an oily surface. These coffees have a low acidity, heavy body, and tend to reveal deeper, darker flavors. Coffees roasted to this level tend to not have many of their origin characteristics left, but that doesn’t mean that these are bland and boring. Some coffees really lend themselves to a dark roast because they thrive with chocolatey, nutty, and caramel flavors.