Designers and artists all over the world use Pantone’s color guides to make sure their blue is actually blue. Like a Webster’s dictionary for color, Pantone guides are a standard against which anyone can check their own work.

Those standards are created at Pantone’s factory headquarters in Carlstadt, New Jersey.

In this video, Quartz talks to the workers who maintain and enforce those standards. There is a lot more to it than one may thINK!