In NFPA 704 placards, which color indicates Flammability hazard?

In NFPA 704 placards, which color indicates Flammability hazard?

• A. Blue
• B. Red
• C. Yellow
• D. White

Answer: (B)

NFPA 704 uses a simple color system to convey different hazard types at a glance. The red section represents flammability, signaling how easily the material can catch fire and how intense a fire could be. The numbers in that red area (0–4) show severity, from nonflammable (0) to extremely flammable (4). The other colors indicate health (blue), reactivity (yellow), and any special hazards (white). This quick color cue helps responders choose the right PPE and procedures. So, the color that indicates Flammability hazard is red.

NFPA 704 uses a simple color system to convey different hazard types at a glance. The red section represents flammability, signaling how easily the material can catch fire and how intense a fire could be. The numbers in that red area (0–4) show severity, from nonflammable (0) to extremely flammable (4). The other colors indicate health (blue), reactivity (yellow), and any special hazards (white). This quick color cue helps responders choose the right PPE and procedures. So, the color that indicates Flammability hazard is red.