The new OSHA/ANSI signs use a color-coded signal word panel. Every header in an OSHA/ANSI Safety Sign is assigned a background color. For example - Red for Danger, Yellow for Caution, Orange for Warning, Green for Safety Instructions and Blue for Notice. OSHA Notice Signs are mostly used to convey security messages and general policies. The signal word “NOTICE” is always in white on a blue background. This contrasting combination gives the sign a distinct and uniform look which can be easily recognized from afar amid other signage posted in and around your facility.