Back Resistor Color Codes

Resistor Color Codes

Color coding is used to quickly determine the capacity or rating of an electronic component. For resistors, there are generally four color bands, with the following values:

The image here shows an example:

Resistor color bands

Using the table below, this resistor would have a resistance of 2,700,000 ohms:

Color Significant
figures
(Bands A and B)
Multiplier
(Band C)
Tolerance
Black 0 1
Brown 1 10 1%
Red 2 100 2%
Orange 3 1,000
Yellow 4 10,000
Green 5 100,000 0.5%
Blue 6 1,000,000 0.25%
Violet 7 10,000,000 0.1%
Gray 8 100,000,000 0.05%
White 9 1,000,000,000
Gold .1 5%
Silver .01 10%
None 20%