Safety Cues In Different Hues

June is National Safety Month, and it's a great time to learn what the various colors of safety signs mean. Using different colors draws the viewer’s attention and offers an indication of their meaning without needing to read the words.

The American National Standards Institute has established rules governing what specific sign colors mean.


  • Danger, high risk of injury or death
  • Emergency stops and alarms
  • Fire protection equipment


  • Guarding devices
  • Hazardous conditions
  • Moderate risk of injury


  • Caution statements
  • Materials handling equipment
  • Minor risk of injury
  • Wet floor signs



  • Action to be carried out
  • No immediate hazard


  • First aid equipment or location
  • Safety equipment or information


  • Radiation hazard
  • Equipment that produces radiation

Red: Red indicates an imminent threat or hazardous conditions that could cause serious injury or even death. This color alerts people they need to stop, or mark off restricted areas.

Orange: Orange warns of potential hazards and a moderate risk of injury and is most commonly used with labels that are placed directly on machinery. It is also used for wall signs, specifically warning signs.

Yellow: Yellow signifies potential hazards or dangerous situations that could cause minor injuries if not properly addressed. This includes risks of tripping, falling, getting burned, being caught in a pinch point, experiencing hearing damage, and almost any other common hazard that may be present.

Green: Green signs often indicate safety equipment, emergency exits, first aid stations, or areas free from potential hazards. This color is commonly used for first aid signs or signs indicating exits.

Blue: Blue signs provide general information, instructions, or guidance. This information is also used to instruct workers where to go. 

Purple: Purple signs indicate the presence of radiation sources or areas with increased radiation levels.

When you need safety color cues, it’s twine time.


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