"In the image shared above, the dots are all purple (hex code #6600ff, or electric violet, if we're going to be precise). True blue would be #0000FF, as one person points out. But most viewers report seeing only the dot that they directly focus on as purple, while the others seem to change to a more blue-like hue. Some even say the dots they're not looking at disappear completely."
"'Only one is purple to me, but it keeps moving around,' one person writes. 'If I look directly at it, it's purple. If I look away at all it's blue,' another person says, equally perplexed 'Mine is all light purple with the one I am looking at deep purple. All light purple if I look away,' someone else reports. Some say the effect changes depending on whether they use the eye comfort shield on their phone."
All nine dots share a purple color (hex #6600ff, electric violet), while true blue would be #0000FF. Many viewers perceive only the dot they directly fixate as deep purple, with peripheral dots appearing bluer or vanishing. The perceived hue can change when phone blue-light or eye-comfort filters are applied. The image was one of three created for a study on purple perception. The dots consist of a mixture of red and blue with no green, and human color processing, peripheral sensitivity, and contrast with the background alter the experienced color.
Read at Creative Bloq
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