Underglow in Hawaii
Underglow is legal in Hawaii, including while driving, subject to color and flashing limits: Front-visible light must be white or amber and rear red, with no flashing; blue is banned on all vehicles.
Verified against primary sources · August 2026
What the law says
Hawaii does not ban underglow — it restricts colors and behavior. Front-visible light must be white or amber and rear red, with no flashing; blue is banned on all vehicles. Blue light carries penalties up to $1,000 and a year in jail. Green is best avoided.
Specific Limits
- Restrictions
- Front-visible light must be white or amber and rear red, with no flashing; blue is banned on all vehicles.
- While driving
- allowed
Exceptions & Exemptions
Underglow lights cannot be red or blue colors, cannot flash or strobe, and cannot be visible while the vehicle is in motion on public roads. Only white and amber colors are generally permitted.
Frequently Asked Questions
Are underglow legal in Hawaii?
What are the exact underglow limits in Hawaii?
Are there exceptions for underglow in Hawaii?
Street-legal underglow picks
Gear that helps you mod without a ticket in Hawaii.
The glow that's legal in every state — inside the cabin instead of under it.
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