A hazard is typically signaled by red and/or yellow colors in safety signage, with red indicating immediate danger or prohibition and yellow warning of potential hazards. The exact color meanings can vary slightly by regional standards, but common conventions are:
- Red: Danger, stop, or fire-related hazards and emergency equipment.
- Yellow/Amber: Caution, warning of a potential hazard or condition that requires attention.
- Blue: Mandatory actions or instructions that must be followed.
- Green: Safe condition, emergency exits, or first aid resources.
If you’re working in a specific jurisdiction or industry, check the local standards (for example, ISO 7010, OSHA/ANSI guidelines, or regional fire- safety codes) for the precise color-code definitions used in that context. A hazard sign is designed to be quickly recognizable to draw attention and convey the risk without needing to read text.
