Modern Telephone Cable Color Code

On terminal blocks the TIP is the first wire of a pair. The TIP conductor carries a majority of the TRACER color and a minority of the PAIR color.

The PAIR colors are BLUE ORANGE GREEN BROWN SLATE. The TRACER colors are WHITE RED BLACK YELLOW VIOLET. After the first 25 pairs, the first bundle of 25 are wrapped in a WHITE BLUE ribbon and the second 25 are wrapped in a WHITE ORANGE ribbon, etc. After 625 pairs are thusly identified, the first 625 pair bundle is wrapped in a WHITE BLUE ribbon, etc. to infinity.

PAIR TIP RING
1 WHITE BLUE
2 WHITE ORANGE
3 WHITE GREEN
4 WHITE BROWN
5 WHITE SLATE
6 RED BLUE
7 RED ORANGE
8 RED GREEN
9 RED BROWN
10 RED SLATE
11 BLACK BLUE
12 BLACK ORANGE
13 BLACK GREEN
14 BLACK BROWN
15 BLACK SLATE
16 YELLOW BLUE
17 YELLOW ORANGE
18 YELLOW GREEN
19 YELLOW BROWN
20 YELLOW SLATE
21 VIOLET BLUE
22 VIOLET ORANGE
23 VIOLET GREEN
24 VIOLET BROWN
25 VIOLET SLATE

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PAIR	TIP	RING
1	WHITE	BLUE
2	WHITE	ORANGE
3	WHITE	GREEN
4	WHITE	BROWN
5	WHITE	SLATE
6	RED	BLUE
7	RED	ORANGE
8	RED	GREEN
9	RED	BROWN
10	RED	SLATE
11	BLACK	BLUE
12	BLACK	ORANGE
13	BLACK	GREEN
14	BLACK	BROWN
15	BLACK	SLATE
16	YELLOW	BLUE
17	YELLOW	ORANGE
18	YELLOW	GREEN
19	YELLOW	BROWN
20	YELLOW	SLATE
21	VIOLET	BLUE
22	VIOLET	ORANGE
23	VIOLET	GREEN
24	VIOLET	BROWN
25	VIOLET	SLATE