What Color Are Exit Signs Required to Be

Exit signs are essential for safe egress during emergencies. In the United States, the color requirement for exit signs has historically centered on red, but recent code updates in some jurisdictions allow green as an alternative. This article explains current practice, what codes say, and how to verify the color requirement for a specific building or location.

Understanding The Baseline Requirement

Across many U.S. buildings, exit signs must be clearly visible and legible under all conditions, including power outages. The color requirement is part of broader life-safety and egress regulations that govern how doors, routes, and indicators are marked. Public spaces, workplaces, and multifamily buildings typically follow a combination of federal OSHA standards and state or local codes that reference the National Fire Protection Association (NFPA) Life Safety Code and other adopted standards.

Historically, red exit signs have been the standard in many jurisdictions. The red color is used because it contrasts well with many interior environments and is quickly recognizable in emergencies. In practice, whether a sign is red background with white lettering or red lettering on a white background can vary by code edition and installation, but the red hue remains the most common expectation in many older and some current facilities.

Green Exit Signs: When They Are Permitted

Some newer building codes and jurisdictions permit green exit signs, often with white lettering or pictograms. Green is used to align with modern pictorial safety signaling trends and to differentiate exit indicators from other signage. In these installations, the sign typically uses a green background with white “EXIT” lettering or a green field with a white pictogram of a person exiting a door, consistent with some editions of NFPA 101 and ISO-style signage conventions.

Whether green signs are allowed depends on the specific code edition adopted by the jurisdiction and the building type. Facilities undergoing modernization or newly constructed buildings in areas that have updated their life-safety codes may implement green exit signs, while existing structures may retain red signs until a code-mandated retrofit occurs.

Which Codes Influence Color Requirements?

Several codes and standards commonly influence exit sign color in the United States:

• OSHA Standards: Workplace safety regulations require visible and illuminated exit indications. The color requirements are tied to the sign’s design and visibility, with historical emphasis on red in many enforcement contexts.
• NFPA 101 Life Safety Code: This code governs egress and exit signage in many states and municipalities. Some editions permit either red or green exit signs, depending on adoption and amendments by the jurisdiction.
• Local and State Amendments: States and cities often adopt NFPA 101 with modifications or adopt model codes that specify color. Always check the local building or fire code authority for the exact requirement.

Practical Guidance For Compliance

When determining the correct color for exit signs in a building, consider the following practical steps:

• Check Local Code Adoption: Identify the edition of NFPA 101 and any local amendments currently in force in the building’s jurisdiction.
• Review Occupancy Type: The required color can vary by occupancy (e.g., industrial, educational, healthcare) and by whether the building is new construction or an existing structure undergoing renovation.
• Inspect Sign Design: Look for sign characteristics such as illumination, contrast, legibility, and the presence of pictograms. Consistent illumination during power outages is typically mandated.
• Plan for Retrofits: If a retrofit is planned, verify whether the code allows green or red signs and ensure compatibility with emergency lighting requirements and accessibility standards.

Color, Visibility, And Accessibility

Beyond color, exit signs must meet visibility standards, including size, luminance, and color contrast with the background. The letters or symbols should be clearly legible from a reasonable distance in low-light conditions. Accessibility considerations also apply, ensuring that signs are readable by people with visual impairments and in crowded egress scenarios.

Sign placement is critical: signs should be located above or adjacent to doors, directing occupants toward the safest egress route. Independent power sources (battery backup) are often required so signs remain illuminated during a power outage, reinforcing the importance of reliable visibility regardless of the signage color.

How To Verify The Right Color For A Building

To confirm the correct exit sign color for a specific building, use this checklist:

• Identify the jurisdiction’s adopted code edition (state, city, or county).
• Confirm whether NFPA 101 permits green, red, or both in that edition.
• Check if the building is subject to OSHA requirements for workplaces and how that interacts with local codes.
• Review architectural and electrical drawings for sign color and illumination design.
• Consult the local fire marshal or building official for confirmation and approval status.

Common Misconceptions About Exit Sign Color

Two prevalent myths persist: first, that green exit signs are always preferred in the United States; second, that red exit signs are outdated and not allowed. In reality, both colors can be compliant depending on the code edition and jurisdiction. The most important factor is adherence to the adopted code, proper illumination, and consistent signage throughout the facility.

Future Trends In Exit Sign Color

As code adoption evolves, more jurisdictions may harmonize with green exit signage to align with international standards and modern pictogram conventions. Building owners planning new construction or major renovations should anticipate potential color changes during code updates and budget accordingly for sign replacements or retrofits if required.

In the meantime, facilities should document their code basis for the chosen color, maintain clear signage, and ensure contingency plans for emergency egress are robust regardless of color choice.