The approach I used to produce this image is pretty much the same I used to derive the "Cromospilled Bananas" and "Veiled Cell" images.
In this case however the starting image is the very raw and basic "Additive Squircles" (https://www.flickr.com/photos/[email protected]/51418365476/), which only has eight base colours (white, cyan, magenta, yellow, red, green, blue and black) laid out in a way to invite a conversion algorithm to generate a 2D colour spectrum.
A 3D colour space cannot really be reduced to a 2D colour spectrum, but something striking might still come out of attempts to reduce the irreducible.
This image looks like a different image when turned upside down.
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