What is the name of the coat color of an ordinary cat? - briefly
The most common coat color for an ordinary domestic cat is typically tabby or gray (also known as dilute blue).
What is the name of the coat color of an ordinary cat? - in detail
The term commonly used to describe the coat color of an ordinary, non-pedigree domestic cat is "solid." Solid refers to a uniform color that covers the entire body of the cat without any distinct patterns or markings. This simple and straightforward description aptly captures the typical appearance of many household cats, which may vary in shades but maintain a consistent hue across their fur.