In most commercial buildings across the United States, emergency exit signs are red. But if you’ve traveled internationally, you may have noticed that many other countries use green instead.
So which color is correct? And what do building codes actually require?
The answer involves U.S. fire codes, international safety standards, and how people visually interpret color in emergency situations.
Why Are Exit Signs Red in the United States?
Red has long been associated with emergency systems in the U.S, think fire alarms, stop signs, and warning signals. Because of this historical convention, red became the dominant color for illuminated exit signage in American buildings.
From a code standpoint, the National Fire Protection Association (NFPA 101 Life Safety Code) and the International Building Code (IBC) allow exit signs to be either red or green, provided they meet required standards for:
- Illumination
- Letter size and stroke width
- Contrast and visibility
- Backup power during outages
- Proper placement along the path of egress
In North Carolina and South Carolina, adopted versions of these codes generally permit both colors. That’s why red remains common, it’s compliant, familiar, and widely used.
Why Do Many Other Countries Use Green Exit Signs?
Internationally, green is the standard color for emergency exit signage.
Organizations such as the International Organization for Standardization (ISO 7010) designate green as the color for “safe condition” signage, including exit routes. In much of Europe, Asia, and Australia, green backgrounds with white symbols are required by regulation.
The reasoning is rooted in safety communication:
- Red typically signals danger or prohibition.
- Green signals safety and safe passage.
In these systems, the message is clear: move toward green to reach safety.
Is Green More Visible Than Red?
This question often comes up, and the answer is nuanced.
What Do Building Codes Require in the Carolinas?
For commercial buildings in North Carolina and South Carolina, exit signage must comply with:
- The International Building Code (IBC)
- The International Fire Code (IFC)
- NFPA 101 Life Safety Code
These codes generally allow either red or green exit signs as long as they:
- Remain illuminated during power loss (battery backup or generator)
- Are visible from required distances
- Clearly mark the path of egress
- Meet size and contrast specifications
Local jurisdictions or specific facility types may impose additional requirements, so it’s important to verify standards before installation or replacement. If you’re reviewing broader updates to compliance, our guide on Preparing for 2026 Energy Code Changes may also be helpful.
Choosing Red or Green: What Matters Most?
If both colors are permitted, the choice often depends on:
- Existing building standards
- Inspector preference
- Corporate or multi-site consistency
- International alignment for global companies
In the United States, red remains the most common and recognizable. However, green is fully compliant in many jurisdictions and may align better with international safety systems.
The key isn’t the color, it’s ensuring your exit signage is code-compliant, properly illuminated, and professionally installed.
Exit Signs Are Part of Your Life Safety System
Emergency exit signs are not decorative fixtures. They are part of a building’s required life safety system and must function reliably during emergencies.
That means:
- No failed batteries
- No dim or partially illuminated lettering
- No improper wiring
- No blocked visibility
Regular inspections and proper installation are critical to passing inspection and protecting occupants.
At Southern Lighting Services, we work with commercial facilities across the Carolinas to ensure exit signage and emergency lighting systems meet current code requirements and perform when they’re needed most.
Because in an emergency, clarity isn’t optional, it’s essential.
Contact Us:
Phone:
1-800-788-7448
Main Office:
4133 US Hwy 321A
Granite Falls, NC 28630
Eastern NC Office :
8760 Trade St. NE
Leland, NC 28451
South Carolina Office :
2423 Highway 17 South
North Myrtle Beach, SC 29582
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Licensed in North Carolina, South Carolina, Virginia, West Virginia, Tennessee & Georgia
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