Cable jacket colors usually identify the fiber type: yellow for OS1/OS2 single-mode, orange for OM1/OM2 multimode, aqua for OM3, aqua or violet for OM4, and lime green for OM5. Perfect for fast, error-free termination in your ODF or splice closures. Available in OS2/OM3/OM4 at factory-direct wholesale pricing. How to Identify Fibers in. Mode Mismatch: Plugging multimode into a single-mode port (or vice versa) causes catastrophic signal loss. By following the color code, you can visually verify compatibility before. Written by Ben Hamlitsch, trueCABLE Technical and Product Innovation Manager RCDD, FOI We are surrounded by colors. Think of a traffic. Fiber optic color codes are standardized color systems used to identify: These codes are defined mainly by: • TIA/EIA-598-C — the primary color code standard Used widely in North America and internationally for fiber jackets, buffer tubes, and fiber strands. • IEC 60794 — international cable. The fiber cable color code helps technicians identify fibers, avoid errors, and complete installations faster. OM3 is a laser-optimized multimode fiber (LOMMF) designed for high-speed networks using VCSELs (Vertical-Cavity Surface-Emitting Lasers). The aqua color (hex: #00B6C1) is instantly recognizable and signals support for 10, 40, or 100 Gb/s over short distances — up to 300 meters at 10G.