If you wonder how to make brown with paint?, then there are actually countless shades of brown, from light to sandy beige to dark brown, there are various shades. Mixing a specific shade of brown can be tough as some brown lean warmer and others cool and while some brown colours have red, yellow and green undertones. So the three primary paint colours that make brown are red, yellow and blue. These are the colours that cannot be created from any other colour. And so depending on the amounts and ratio of each of these three primary colours ie. red, yellow and blue, you can alter the shade of brown that you want to get.