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There are so many types colored fiber optic cables, and these cable color can tell you which type cable you are dealing with. TIA-598C addresses the color code standards which we could adopt and reference:
Non-military Applications
| Orange: | OM1 62.5-Micron Multimode |
| Orange: | OM2 50-Micron Multimode |
| Aqua: | OM3 Laser-Optimized 50-Micron Multimode |
| Aqua/Violet*: | OM4 Laser-Optimized 50-Micron Multimode. OM4 cable is not specified in the standard. Aqua is used for OM3/OM4 cable (and some higher-grade OM2 cable). Violet is used for OM4 cable in Europe and is becoming more common in North America. |
| Yellow: | OS1/OS2 Single-mode |
| Blue: | Polarization-maintaining (PM)Single-Mode |
| Black: | Outdoor fiber |
Military Applications
| Slate: | 62.5-Micron Multimode |
| Green: | 100/140 Micron Multimode |
| Orange: | OM2 50-Micron Multimode |
| Yellow: | OS1/OS2 Single-mode |
| * OM3 OM4 & PM singlemode is Undefined. | |
Inner Cable Organizational Color Coding
Bare fiber are stranded in a loose tube cable. It is simple to recognize the cables and fast to complete the fiber link when you clearly know the color code.
| Fiber Position | Color and Tracer | Sample |
| 1 | Blue |
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| 2 | Orange |
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| 3 | Green |
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| 4 | Brown |
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| 5 | Slate |
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| 6 | White |
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| 7 | Red |
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| 8 | Black |
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| 9 | Yellow |
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| 10 | Violet |
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| 11 | Rose |
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| 12 | Aqua |
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| 13 | Blue/Black |
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| 14 | Orange/Black |
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| 15 | Green/Black |
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| 16 | Brown/Black |
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| 17 | Slate/Black |
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| 18 | White/Black |
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| 19 | Red/Black |
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| 20 | Black/White |
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| 21 | Yellow/Black |
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| 22 | Violet/Black |
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| 23 | Rose/Black |
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| 24 | Aqua/Black |
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Connectors color code:
The advent of metallic connectors like the FC and ST made connector color coding difficult, so colored strain relief boots were often used. The connector strain relief and adapter housing should be identifiable by some color codes listed in TIA 568-C.3.
| Fiber Type | Connector | Connector/Boot |
| OM1 62.5-Micron | Beige/Black/Aqua | Beige |
| OM2 50-Micron | Beige/Black/Aqua | Black |
| OM3 50-Micron | Beige/Black/Aqua | Aqua |
| Single-mode | Blue | Blue |
| Single-mode APC | Green | Green |
The fiber connector/strain-relief boots are also color coded to indicate the polish style of the fiber endface:
| Connector Boot | Endface | Fiber Type |
| Blue | UPC | Single-mode |
| Green | APC | Single-mode |
| Black | UPC | OM2 50-Micron |
| Grey/Beige | UPC | OM1 62.5 Micron |
| White | UPC | OM3 50-Micron |
The boot colors may vary by manufacturer.
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