What term refers to a specific color identifiable by name?

The term "hue" specifically refers to a color that can be identified by a name. In color theory, hue represents the attribute of a color that allows it to be classified as red, blue, green, etc. It defines the basic colors of the spectrum and serves as a fundamental aspect of color identification.

This is distinct from other terms in the list. "Shade" denotes a variation of a hue that is darker, achieved by adding black, whereas "illusion" pertains to a misleading perception of color or visual information. "Style," on the other hand, refers to the manner or design of something, particularly in art or fashion, rather than a specific color. Thus, "hue" is the correct choice because it succinctly captures the concept of color as defined by its name.