Fiber Patch Cord Color Code for Inner Cable Organization
Fiber patch cord is separated into strands, which are the individual fibers within the out jacket.
According to EIA/TIA-598, inner fibers are color coded in a group of 12 fibers and they are counted in a clockwise direction.
Up to 24 individual strands can be manufactured loosely, and after that point, they are usually sectioned into tubes containing 12 each. So there are two situations for multi-fiber patch cords：
For cables that consist of multiple buffer tubes each with 12 or fewer strands. Each tube will be numbered or colored following the same fiber color code.
For cables that have over 12 strands, the color code repeats itself. Each 12-strand group is identified in some other unique way such as adding a stripe or some other specific marks to the new group.
