Use the chart to read the 12-color sequence, then look up a fiber number to find its buffer tube, position and color. We follow TIA-598 for fiber and tube colors, with the cable's specification sheet governing the cable in hand.
Beyond 12 tubes or 12 fibers per tube, the cable's specification sheet defines how repeated colors are marked.
Read fibers per tube from the cable's specification sheet; the cable in hand and its sheet govern this lookup.
These swatches approximate colors on screen; use the cable and its specification sheet as the reference.
TIA-598 defines this 12-color sequence: Blue, Orange, Green, Brown, Slate, White, Red, Black, Yellow, Violet, Rose, Aqua. Read each color against its numbered position in the chart.
| Position | Fiber color | Buffer tube color |
|---|---|---|
| 1 | Blue | Blue |
| 2 | Orange | Orange |
| 3 | Green | Green |
| 4 | Brown | Brown |
| 5 | Slate | Slate |
| 6 | White | White |
| 7 | Red | Red |
| 8 | Black | Black |
| 9 | Yellow | Yellow |
| 10 | Violet | Violet |
| 11 | Rose | Rose |
| 12 | Aqua | Aqua |
Buffer tubes follow the same color sequence as the fibers inside them. Identify a fiber by its tube and its fiber color, keeping the strand number in the record.
With 12 fibers per tube, fiber 30 falls in tube 3, which is Green. Its position within that tube is 6, which is White.
Past 12 tubes or 12 fibers per tube, the colors repeat with an added marking. The cable's specification sheet defines that marking.
A splice diagram or record identifies the cable, tube and fiber on each side of a connection. We retain the strand number alongside the observed colors so the record carries more than a color and destination.
Our color reference is ANSI/TIA-598-D-2014, Optical Fiber Cable Color Coding, with its ANSI/TIA-598-D-1-2018 and ANSI/TIA-598-D-2-2018 addenda. For a loose-tube cable, divide the fiber number by fibers per tube and round up to find the tube number. Subtract the number of fibers in preceding tubes from the fiber number to find its position within that tube. The lookup covers up to 12 tubes and 12 fibers per tube. Screen colors are approximate; the cable and its specification sheet govern.
The chart names a fiber by its tube and color. Our fiber splice design service assigns fiber connections through splice matrices and closure diagrams, with assignment sheets showing each fiber's status as committed, available or unresolved.
Keep those connections findable in as-built splice documentation. A splice record carries cable, tube and strand context with closure and tray keys, preserving the recorded relationship beyond the color alone.
The sequence is Blue, Orange, Green, Brown, Slate, White, Red, Black, Yellow, Violet, Rose, Aqua. These correspond to positions 1 through 12. Buffer tubes use the same sequence, so read the fiber color together with the tube identity and retain the strand number in splice records.
ANSI/TIA-598-D-2014, Optical Fiber Cable Color Coding, provides the reference, together with the ANSI/TIA-598-D-1-2018 and ANSI/TIA-598-D-2-2018 addenda. Older documents call the same color code EIA-598. The swatches here are screen approximations; the cable in hand and its specification sheet govern.
Fiber 30 is White at position 6 in tube 3, whose color is Green. Divide the fiber number by 12 and round up for the tube number, then subtract the fibers in preceding tubes for the position. Check the cable's specification sheet before selecting fibers per tube.
Yes. Buffer tubes use the same Blue through Aqua sequence as the fibers. In the worked example with 12 fibers per tube, tube 3 is Green and fiber 30 is White within it. A splice record needs that tube context together with the cable identity and strand number.
The colors repeat with an added marking defined by the cable's specification sheet. This lookup covers up to 12 tubes and up to 12 fibers per tube. For a cable beyond either limit, use its specification sheet to identify the repeated colors and retain the strand number in the record.
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