Fiber Optic Color Code
TIA-598-C Reference Tool

📚 About TIA-598-C

ANSI/TIA-598-C is the industry standard that defines color coding for optical fiber, buffer tubes, and fiber optic cables. It ensures consistent fiber identification across manufacturers and installations.

The standard defines a 12-color sequence that cycles through tubes and repeats for fibers within each tube, allowing unique identification of every fiber in cables up to 288 fibers and beyond.

🔧 How the color code works

• 12 base colors define the sequence — blue through aqua
• Each buffer tube is numbered and color-coded in sequence
• Fibers within each tube repeat the same 12-color cycle
• Tubes 13–24 (288-fiber cables) use a black tracer stripe to distinguish them from tubes 1–12
• Loose-buffer cables assign one fiber per tube, with the tube color identifying the fiber

📌 12-fiber tube cables

Standard cable construction groups 12 fibers into each buffer tube. A 24-fiber cable has 2 tubes, a 48-fiber cable has 4 tubes, and so on up to 24 tubes in a 288-fiber cable.

To identify any fiber: locate the tube number (tube color), then count the fiber position within that tube (fiber color).

📌 Loose-buffer / breakout cables

Loose-buffer and breakout cables place one fiber per tube. Each buffer tube is color-coded in the TIA-598-C sequence, making the tube color directly the fiber color/number.

This construction is common in premises and short-run applications where individual fiber routing is needed.