The color yellow is a spontaneous and unstable color. It is often associated with food and is highly used in children's products and marketing advertisements aimed at children. Perceived as a childish color by men, yellow is not a color that should be used when marketing products to prestigious or wealthy men.

What color means instability?

Instability, or reactivity, is shown in the yellow area. This part of the color code is for materials that could be unstable during an emergency situation.

What is the color of uncertainty?

Grey is also the color most associated with uncertainty, a “grey area” is an issue about which where there is ambiguity in law or policy.