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TIA-598 FIBER COLOR CODE STANDARD

FIBER POSITIONS — INDIVIDUAL FIBERS (1–12)

BL
BlueFirst fiber in any buffer tube or ribbon
#1
OR
OrangeSecond fiber position, multi-mode standard
#2
GR
GreenThird fiber – often TX on duplex pairs
#3
BR
BrownFourth position in 6 or 12-fiber tube
#4
SL
SlateFifth position – completes first color group
#5
WH
WhiteSixth position – high-contrast dark tubes
#6
RD
RedStarts second buffer tube group
#7
BK
BlackStrong contrast in dense ribbons
#8
YL
YellowSingle-mode jacket standard color
#9
VT
VioletOM5 wideband designation
#10
RS
RoseOften marks spare or tracer
#11
AQ
AquaOM3/OM4 jacket standard color
#12

BUFFER TUBE COLORS — 144F CABLE

Blue Tube · Tube 1Fibers 1–12
Orange Tube · Tube 2Fibers 13–24
Green Tube · Tube 3Fibers 25–36
Brown Tube · Tube 4Fibers 37–48
Slate Tube · Tube 5Fibers 49–60
White Tube · Tube 6Fibers 61–72
Red Tube · Tube 7Fibers 73–84
Black Tube · Tube 8Fibers 85–96
Yellow Tube · Tube 9Fibers 97–108
Violet Tube · Tube 10Fibers 109–120
Rose Tube · Tube 11Fibers 121–132
Aqua Tube · Tube 12Fibers 133–144

CABLE JACKET COLORS

OS1/OS2 Single-ModeJacket: Yellow
OM1 Multimode 62.5μmJacket: Orange
OM2 Multimode 50μmJacket: Orange
OM3 Multimode 50μmJacket: Aqua
OM4 Multimode 50μmJacket: Violet / Erika
OM5 Wideband 50μmJacket: Lime Green