200pcs 100 Ohm 1/4W Resistors 100 Ohm Resistors 100R for LEDs 1/4W 100 Ohm Resistors Their blue colour denotes their accuracy being +/- 1% of the value shown. Brown resistors have an accuracy of +/- 5% and are thought to be less suitable for high accuracy applications. These resistors are RoHS certified meaning they are free from harmful chemicals.