The resistor color code

Ohmic resistors are so small that it is not possible to reprint resistance values as a numerical legibly. For this reason, a color code has been developed to denote resistor values. This is represented as color rings printed circumferential on the resistance. Depending on the application, there are color codes with 4, 5 or 6 rings.

When resistors have 4 rings, the first two rings denote the numerical value, the third ring is for the multiplier and the fourth ring is for the tolerance class.

When resistors have 5 rings, the first three rings denote the numerical value, the fourth ring is for the multiplier and the fifth ring is for the tolerance class.

Resistors with 6 rings read the same way as resistors with 5 rings, with the sixth ring providing additional information relating to the temperature coefficient.

In what direction are the color codes indicated on resistance

Of course it is important that you read the color code from left to right always. This is not difficult to do: the last color ring (at the very right) is generally somewhat spatially removed from other rings. There is also plenty of open space at the right of the rings. 

Moreover, it is practically impossible to read resistances in the wrong direction. An incorrect reading order would provide an invalid resistance value.