A new viral test designed by neuroscientist Dr. Patrick Mineault is sparking curiosity online by revealing how individuals perceive colours differently. The "Is My Blue Your Blue?" test shows participants where they draw the line between blue and green on the colour spectrum, comparing their results to others who have taken the test.Taking the test is simple: users visit the website ismy.blue, where they are shown colours and asked whether they perceive them as blue or green. For shades like turquoise, which lie between the two, participants must decide which colour they see more strongly. The test gradually presents colours that become increasingly similar until it determines where the individual's perception switches from green to blue.Since its launch in August, the test has attracted over 1.5 million visits. Many social media users are sharing their results on platforms like X (formerly Twitter), adding to its viral appeal.Dr. Mineault, also an AI researcher, explained his motivation for creating the test in an interview with The Guardian. “I’m a visual neuroscientist, and my wife, Dr. Marissé Masis-Solano, is an ophthalmologist. We have this argument about a blanket in our house – I think it’s unambiguously green, and she thinks it’s unambiguously blue,” he said. This debate inspired him to develop a tool to explore how people perceive colours differently.The test maps colours in HSL (hue, saturation, lightness) space, focusing on hues between 150 and 210, which cover the blue-green spectrum. According to Mineault, most people's responses cluster around hue 175 – the HTML colour turquoise. Interestingly, this finding indicates that many people consider cyan, at hue 180, to be more blue than green.
Mineault emphasised the philosophical and scientific significance of the test, noting that the question of whether people see the same colours has fascinated minds for centuries. He added that the test's ability to show participants the distribution of perceptions has resonated with users, deepening their interest in this timeless debate.For years people have called out my categorising of green and blue and told me I was colour blind - but I can see the colours perfectly well, I just categorise them weird - and it's nice to be vindicated, but also weird to see it spelled out like this.https://t.co/61nfsoKlnc pic.twitter.com/2RZ3GUb0cK
— Jay Hulme (@JayHulmePoet) September 3, 2024
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