Overview of the fiber-optic color coding of connectors, adapters and the corresponding jacket colors. Representation of the fiber coding according to IEC and DIN standard.

Color coding for connectors and adapters

Typ Color
Singlemode (0°=PC) blue
Singlemode (8°=APC) green
Multimode OM1 + OM2 black / beige
Multimode OM3 turquoise
Multimode OM4 erikaviolett

Fiber coding
IEC 60794-2

Fiber Color
1 blue
2 yellow
3 red
4 white
5 green
6 violett
7 orange
8 grey
9 turquoise
10 black
11 brown
12 pink

Fiber coding 
IEC 60304 and DIN EN 60794-1-1 Bbl1

Fiber Color
1 red
2 green
3 blue
4 yellow
5 white
6 grey
7 brown
8 violett
9 turquoise
10 black
11 orange
12 pink

Faserkodierung nach
Swisscom

Faser Farbkodierung
1 red
2 green
3 yellow
4 blue
5 white
6 violett
7 orange
8 black
9 grey
10 brown
11 pink
12 turquoise

Faserkodierung nach
TIA/EIA-598 EN 50174-1

Faser Farbkodierung
1 blue
2 orange
3 green
4 brown
5 grey
6 white
7 red
8 black
9 yellow
10 violett
11 pink
12 turquoise

Color coding up to 12 fibers. In the case of more than 12 fibers in the bundle, the fibers 13-24 are provided with an additional ring marking.

Coat Color Coding

Typ Color
FO-External Cable black with orange stripe
FO-Universal green
FO-Internal Cable Singlemode G.652 + G.657 yellow (green)
Multimode G50 (OM2) orange
Multimode G50 (OM3) turquoise
Multimode G50 (OM4) erikaviolett
Multimode G62,5 (OM1) grey

Bundle Color Coding

Typ Color Fiber Typ
Forwarder red all
Directional green all
Follow up white E9 / 125
lightgreen G50 / 125
blue G62 / 125
Blind elements black

The counting of the bundles takes place in hybrid F0 cables from the small to the larger diameter.