Paint mixing calculator
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Juicy Satsuma tells you how to mix your paints.
Red, Yellow and Blue are not the primary colours. Cyan, Magenta, and Yellow are the real primary colours. Go and have a look at a printer cartridge, if you don't beleive me!
Most printers also make use of Black, which helps with dark and desaturated colours. If you're mixing your own paint, you will also need White, unless you can pull off pointillism at 300dpi!