And if your local print shop is using CMYK to print, you'll loose around a third of your RGB colours (whatever colour space you're using). To get the best reproduction from your paintings, use a printer, such as a high-end epson inkjet with around 10 colours. If you don't want to buy your own printer you can use a high end digital printer, for example, here's one in the UK: https://www.theprintspace.co.uk (You'll still need to calibrate your monitor and use printer profiles)
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