Dusty grey-blue, the color of a cloudy sky on a mild day.
Cool is a cool grey, close to teal.
It can be described as cool, muted, greyish and dusty.
Set in black, because black reads best on it.
Cold is the presence of low temperature, especially in the atmosphere. In common usage, cold is often a subjective perception. A lower bound to temperature is absolute zero, defined as 0.00 K on the Kelvin scale, an absolute thermodynamic temperature scale. This corresponds to −273.15 °C on the Celsius scale, −459.67 °F on the Fahrenheit scale, and 0.00 °R on the Rankine scale.
Read on WikipediaCoolness, or being cool, is the aesthetic quality of something being compatible with currently admirable social norms of society or a group of people. Because of the varied and changing interpretation of what is considered cool, as well as its subjective nature, the word has no single meaning. For most, coolness is associated with exemplifying composure and self-control. When used in conversation, it is often as an expression of admiration or approval, and can be used when referencing both people and items of interest. As an aesthetic quality, cool was first used in African-American Vernacular English by jazz musicians in the 1940s, and from there spread into General American English. Although commonly regarded as slang, cool is widely used among disparate social groups and has endured in usage for generations.
Read on WikipediaProper noun