What color background do RP signs and postings have?

• A. Yellow background with magenta or black lettering.
• B. Blue background with white lettering.
• C. Red background with white lettering.
• D. Green background with black lettering.

Answer: (A)

RP signs and postings use a bright yellow background with magenta or black lettering. The yellow background is chosen to grab attention and signal caution, which is appropriate for respiratory protection requirements that workers need to notice quickly. The high-contrast lettering ensures readability from a distance in busy work environments. In safety signage, other color schemes correspond to different message types—blue with white for mandatory actions, red with white for danger or prohibitions, and green with black or white for safe conditions—so the yellow background specifically identifies RP-related postings and keeps them distinct from other categories.