Resistor colour code.
| Colour | Band 1 | Band 2 | Band 3 | Band 4 |
|---|---|---|---|---|
| . | Digit 1 | Digit 2 | Multiplier | Tolerance |
| Black | 0 | 0 | X 1 | . |
| Brown | 1 | 1 | X 10 | +/- 1% |
| Red | 2 | 2 | X 100 | +/- 2% |
| Orange | 3 | 3 | X 1K | . |
| Yellow | 4 | 4 | X 10K | . |
| Green | 5 | 5 | X 100K | . |
| Blue | 6 | 6 | X 1M | . |
| Purple | 7 | 7 | X 10M | . |
| Grey | 8 | 8 | X 100M | . |
| White | 9 | 9 | X 1,000M | . |
| Gold | . | . | X 0.1 | +/- 5% |
| Silver | . | . | X 0.01 | +/- 10% |