This standard prescribes a colour code for the identification of ropes and cordage made from different natural and man-made fibres ( covered by various Indian Standard Specifications ) by using yarn(s) of easily identifiable colour, placed inside the rope/cordage, or by colouring the rope/cordage entirely in the same colour.
IS 9560-1980 history
1980IS 9560-1980 Color codes for identifying ropes and ropes