What is the color of the service coat and pants in the specified shade?

The correct choice, Air Force Blue Shade 1620, is significant as it represents a specific color standard defined by the U.S. Air Force for uniform service. This shade is recognized for its distinct hue that is used in military uniforms to establish uniformity and professionalism among service members. The established color standards allow for easy identification of personnel and maintain a cohesive appearance that aligns with military regulations.

The other options, while they may seem similar, represent different shades that may not meet the specific requirements set for service coats and pants. Air Force Blue Shade 1625, for instance, is slightly different in tone and not designated for the coats and pants specified. Light Blue Shade 1550 and Dark Blue Shade 1400 also fall outside the requested specifications, further emphasizing that adherence to the correct shade is crucial for maintaining uniformity within the service. Recognizing the importance of accurate color representation is key for understanding military dress codes and their implications in formal environments.