Which of the following describes a cool color?

A cool color is typically associated with colors that evoke a sense of calmness or tranquility and are found on the cooler side of the color wheel. In this context, the correct description of a cool color includes those that range from green to violet. These colors tend to recede in visual space and can create a soothing or refreshing effect.

Cool colors are characterized by their associations with elements such as water and foliage, which lend themselves to feelings of serenity and relaxation. By understanding this, it's clear why this range is recognized as cool colors when the entire color spectrum is considered.

The other options do not correctly define cool colors in the traditional context of color theory. For instance, the first option describes a unique aspect of color mixing but does not pertain to the classification of color temperature. The second option refers to warm colors, which span from yellow to red, directly opposing the characteristics of cool colors. Lastly, the fourth option discusses the concept of color saturation or intensity, which is a different attribute that does not relate to cool versus warm color classification.