How To Read Color Codes of Resistor

Colors

Here is the table with the colors and numbers. As you can see they are:

• BLACK:     0
• BROWN:   1
• RED:           2
• ORANGE:   3
• YELLOW:   4
• GREEN:       5
• BLUE:          6
• VIOLET:      7
• GREY:          8
• WHITE:        9

But this is not for all colors. From right to left the second color is multiplier. Digits from the first colors must be multiplied with the number of this color.

• BLACK:     1
• BROWN:   10
• RED:           100
• ORANGE:   1000
• YELLOW:   10000
• GREEN:       100000
• BLUE:          1000000
• GOLD:          0.1
• SILVER:       0.01

And the last color: This is tolerance. Tolerance is the precision of the resistor and it is given as a percentage. For example a 390 resistor with a tolerance of ±10% will have a value within 10% of 390, between 390 - 39 = 351 and 390 + 39 = 429 (39 is 10% of 390).

• BROWN:   1%
• RED:           2%
• GOLD:        5%
• SILVER:     10%
• NOTHING:  20%