This Quartz video that goes inside Pantone‘s factory headquarters in Carlstadt, N.J., is simply amazing.

Pantone’s color employees are required to have “near-perfect” color vision. These people can detect shades that most others cannot, and it’s incredible to watch them note differences that are undetectable to Quartz’s film crew.

The Pantone employees are subject to a yearly color exam. The day of, they aren’t allowed any caffeine, which affects the capillaries in their eyes, hence their vision.

Watch and see how the people detect colors that computers cannot — and work together with the machines to create and produce what is considered the color bible to the many designers, artists and creatives out there who depend on it.

On a side note, did you know that Pantone’s colors of 2016 are rose quartz and serenity?

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