What color is associated with a Class 2 laser warning sign?

The color associated with a Class 2 laser warning sign is yellow. This choice is important as it aligns with safety regulations and standards that specify the color coding for different classes of lasers.

Class 2 lasers are considered to pose a low risk to the eyes with a nominal hazard zone limited to where the beam is directly viewed. The yellow color serves as a caution indicator, alerting individuals to be aware of the laser use in the area. This background color effectively contrasts with the symbol and text to ensure visibility and attention.

In contrast, other colors like blue, red, or green do not typically represent Class 2 lasers in safety signage systems. Blue or green might be associated with different types of warning signs or different classes of laser hazards, while red is often associated with more dangerous classes, such as Class 3 and Class 4 lasers, which require more stringent safety measures due to their higher risk of causing eye damage. Hence, yellow is the appropriate choice for signaling the presence of Class 2 lasers, making it consistent with safety guidelines.