Black coaxial cables are coaxial cables that are coloured black. These cables are used for a variety of applications, including television (TV) signals, internet connections, and other data transmission needs. The colour of the coaxial cable is primarily a matter of aesthetics and does not significantly affect the cable's performance or functionality.

The most important aspects of a coaxial cable are its technical specifications, such as impedance, shielding, and signal loss characteristics. These specifications determine how well the cable can transmit signals and whether it is suitable for specific applications.

When selecting a coaxial cable, consider factors like cable impedance (commonly 75 ohms for video and TV signals), the type of shielding (usually braided or foil), and signal loss characteristics (lower loss is better for longer cable runs). The choice of a black coaxial cable is mainly for visual integration with dark-colored walls, ceilings, or surroundings, where it can be less conspicuous compared to cables of other colors.

The suitability of a coaxial cable depends on the requirements of the devices it will connect and the signals it will carry. The colour of the cable is primarily a matter of personal preference and how well it matches the aesthetics of the installation location.