color is the visual perception based on the Electromagnetic Spectrum. We see it, when color bounces off an object, we see the color reflected by the object.
CMY is Cyan, Magenta, Yellow
CMY secondary colors are Red, Green and Blue.
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CMY tertiary colors are Cyan-Green, Green-Yellow, Yellow-Red, Red-magenta, magenta-blue, blue-cyan.
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Photoshop a is a powerful tool, but it is unique with little differences
A thing to notice would be the tertiary colors, the colors between the main three, mainly the fusion of the colors.
Mandalas
There are formulas for creating a color palette.
the palettes are made with Analogous, monochromatic and triadic to name a few. in my opinion, Analogous come out the best.
the mandala has a lot of little details to see when zoomed it to the picture.