Different connector types such as SC, LC, and FC are color-coded based on the fiber type they are designed to connect to. The blue connector is typically used for single-mode fibers, while the beige connector is used for multi-mode fibers. Connector polish matters! Connectors don't just connect two fibers — they impact performance. Have a network installation project? Cable. Q1: What is the standard used for fiber color coding? The global standard is TIA-598-D, defining color codes for jackets, fibers, and connectors in both single-mode and multimode applications. In the photos above, on the left is a 1728 fiber cable with color coded buffer tubes, in the center are (from the top) singlemode zipcord cable used for patchcords with each fiber color coded, and on the right, a yellow.