What term describes a color in offset printing that is generated by a single run of ink?

The term that describes a color in offset printing generated by a single run of ink is "Spot Color." Spot colors are specifically mixed inks that are pre-formulated for a precise color match, using a standardized color matching system such as the Pantone Matching System (PMS). This method ensures consistency across print runs and is often preferred when a specific hue is critical for brand identity or design integrity.

In contrast, process color refers to the use of a combination of cyan, magenta, yellow, and black (CMYK) inks to create a wide range of colors through layering, which may not yield an exact match to desired hues. Mix color and shade color are not standard terms used in the context of offset printing and do not accurately represent the concept of a single ink run. Therefore, spot color is the most appropriate term for describing colors achieved through one specific ink application.