Red Violet Black Gold — 27 Ω

Read left to right, starting from the end where the bands are grouped. The gold band is the tolerance and always sits alone at the far end.

What each band says

In a circuit

Surface-mount marking for the same value: 270.

If you misread one band

Brown and red, or orange and red, are easy to confuse under a desk lamp. These are the codes one band away from this one.

• Brown Violet Black17 Ω
• Red Black Black20 Ω
• Red Brown Black21 Ω
• Red Red Black22 Ω
• Red Orange Black23 Ω
• Red Yellow Black24 Ω
• Red Green Black25 Ω
• Red Blue Black26 Ω