The Cincinnati Reds use red, black and white. Red is the dominant color, as the team name suggests, and it appears on caps, jerseys and the wishbone 'C' logo. Black is used for outlines and trim. The Reds are often called the oldest franchise in professional baseball, and red has long been their color.
These are commonly used reference values; they can vary by source, material or screen. Brand names and colors belong to their owners; this page only lists color codes for information.