Where can I find information about color blindness testing?

There is information on our website regarding color blindness testing: https://www.printing.org/hiring-and-color-vision-deficiency-hr-concerns. The two most common tests used by printers to test for color deficiencies are the HRR Pseudoisochromatic Test and the Farnsworth Munsell Hue 100 Test. The HRR Pseudoisochromatic Test consists of 24 plates with hidden numbers in pastel circle patterns. This is the simplest test and detects genetic color deficiency or color blindness. The Farnsworth Munsell Hue 100 Test consists of 85 color chips and is also useful for determining an individual's ability to discriminate between subtle color differences.

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