For example, cadmium red already has yellow undertones. If you mix it with blue, and then add yellow, your paint may come out too light. Rose madder, on the other hand, is a cool red with a blue bias. You will get a violet colour when mixing it with blue, which needs to be adjusted with yellow paint. [2] X Research source
Add small quantities at a time to avoid wasting paint. Once you’ve figured out which ratios work, you can mix a great deal of your maroon paint. [4] X Research source
Add just a drop or two of yellow to start and mix it in. Continue adding yellow in small drops until your mixture comes out maroon.
If your maroon has more of a violet colour than red hue, add some more yellow paint to adjust.
Also, write down the rough ratios used and adjustments you made to create maroon so you can create a similar colour of maroon using the formula later on.
