Mr Man and I recently went on the hunt for the perfect blue gift for a friend. We did eventually find a beautiful piece of handblown glass in a dark blue with silver flecks. Lovely.
The only issue, we later discovered, was that our goal should have been a color that was closer to teal. So not the deep blue of a falling dark sky, but the vibrant green-tinged hues of a Caribbean sea over a white sand beach.
Regardless, the piece was still pretty. And it brought up the question of whether one person’s idea of blue is the same as another’s.
And then this site came across my desk: Is My Blue Your Blue?
If you think the page color is blue, click the button at the bottom right. If you think it’s green, click the bottom left. And don’t be surprised when it starts to get tricky!
For more on this topic, check out this article on the variability in color perception, and interpretation, in humans.
The science of color perception
A lot of factors feed into how people perceive and talk about color, from the biology of our eyes to how our brains process that information, to the words our languages use to talk about color categories. There’s plenty of room for differences, all along the way.
For example, most people have three types of cones — light receptors in the eye that are optimized to detect different wavelengths or colors of light. But sometimes, a genetic variation can cause one type of cone to be different, or absent altogether, leading to altered color vision. Some people are color-blind. Others may have color superpowers.
Superpowers? Yes, please!
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J.R. Johnson 
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