Circle to Search mentions that the color is a “mix of blue and green” and offers descriptions like Ocean Green, Dark Sea Green, and Sea Blue, which are in the ballpark but aren’t home runs.

The dots serve as a way for printers to color-match, ensuring that, for instance, each bag of Lay’s Classic Potato Chips is the same exact shade of sunny yellow.

Before the can enters the machine, this small marker is painted onto each can. Some dots can only be seen with ultraviolet light, but many others are marked with an assortment of colors.