Have you ever had a dispute over color like this with friends, family, or spouse? As designers, it cannot be overstated how important our color vision is, and how sensitive we must be to nuanced differences in shades and hues. Some designer positions even require color testing. Correct color perception can make all the difference as to whether your design grabs your target customer, or gets passed over.
The number of hues that the human eye can see is disputable, varying from 100,000 to 10 million. Nevertheless, it is our job to have a trained eye in distinguishing colors. One of the standard color vision tests requires the subject to arrange 15 colored discs in order through the spectrum. The colors are identical in value, however, so the subject must be sensitive to the different hues. Here's an online version to the test.
Wanna take this to the next level? Try your hand at distinguishing among 100 different hues at this website.
Then, challenge your friends, family or spouse, and see who should be buying the striped shirts in your household.