Under the TIA/EIA-598-C standard, the universal 12-color sequence is: 1-Blue, 2-Orange, 3-Green, 4-Brown, 5-Slate (Gray), 6-White, 7-Red, 8-Black, 9-Yellow, 10-Violet, 11-Rose, and 12-Aqua. This sequence repeats for cables with more than 12 fibers. Table 151-13 uses the worst case S0 and ZDW given in Table 151-14, and calculates the worst case positive and negative dispersion using the worst case TX wavelengths given in Table 151-7 and footnote (b), and the worst case fiber length (operating distance). National standard. Global Consistency: Whether cables originate in North America, Europe, or Asia, the same 12‑color sequence applies—so any technician can interpret it correctly. * For cables >12 fibers: The sequence repeats with one or more black stripes (except black fibers, which receive yellow stripes) to. optical fibre cables INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33. 10 ISBN 978 -2-8322 -6517 -8 ® Registered trademark of the International Electrotechnical Commission colour inside – 2 – IEC TR 63194:2019 © IEC 2019 CONTENTS CONTENTS. This guide explains the latest EIA/TIA-598-D fiber color-coding standard used to identify fiber types, inner fiber sequences, and connector polish styles. IEC TR 63194:2019 which is a Technical Report, examines the need for and intent of colour coding of optical fibre cables.