The standard color sequence for a 6-core optical fiber cable follows the first six colors of the TIA-598-C 12-color sequence: Blue, Orange, Green, Brown, Slate, and White.

Standard Fiber Color Sequence

For small multi-fiber cables like 6-core, the first six colors of the TIA-598-C standard are used to identify each fiber individually:

1. Blue – Fiber 1
2. Orange – Fiber 2
3. Green – Fiber 3
4. Brown – Fiber 4
5. Slate (Gray) – Fiber 5
6. White – Fiber 6 This sequence ensures that each fiber can be quickly and accurately identified during installation, splicing, or termination, reducing the risk of miswiring or cross-connections .

Additional Notes

• Outer Jacket Color: The cable jacket may also indicate fiber type (e.g., single-mode or multimode) with standard colors such as yellow for single-mode, orange for OM1/OM2 multimode, aqua for OM3/OM4, and lime green for OM5 .
• Connector and Boot Colors: Connector boots often match the fiber type and polish type (UPC/APC), providing an additional visual cue for correct connections .
• Scaling for Larger Cables: In cables with more than 12 fibers, the 12-color sequence repeats with stripes or markings to maintain unique identification . For a 6-core cable, only the first six colors are needed, so no repetition or striping is required. Using this standardized color coding system ensures global consistency, simplifies maintenance, and enhances operational safety in optical networks .