The Definition of Yellow Safety Color

Definition of Yellow Safety Color

The standard safety color for caution. Under OSHA's safety color code (29 CFR 1910.144) and the ANSI Z535 series, yellow is used to mark physical hazards such as striking against, stumbling, falling, tripping, and being caught in between, and it is the signal color for CAUTION signs warning of hazards that could result in minor or moderate injury.

Example of Yellow Safety Color

A warehouse paints the edges of its loading dock and the bottom step of each stairway yellow, and marks pedestrian walkways with yellow floor tape, to draw attention to trip and fall hazards.

Frequently Asked Questions: Yellow Safety Color

What's the difference between yellow, orange, and red safety colors?

‍Under ANSI Z535, red is used for DANGER (imminent hazards likely to cause death or serious injury), orange for WARNING (potential for death or serious injury), and yellow for CAUTION (potential for minor or moderate injury).

Is yellow and black striping a recognized marking?

‍Yes, alternating yellow and black stripes are commonly used to highlight physical hazards such as low clearances, edges, and equipment that could be struck, making them more visible than solid yellow.

Is yellow floor tape required for aisles?

‍OSHA requires permanent aisles and passageways to be appropriately marked but does not mandate a specific color; yellow is the most common choice because it signals caution and stands out on most floors.