Using pure, primary colours generally works best to create new colours. If you're using non-primary colours, do an internet-research or read your paint or dye's container carefully to determine any undertones and see if they are suitable for creating maroon.
[header] How to make maroon [title] Get primary red, blue, and yellow paint or dye. [step] Maroon is primarily made up of red and blue. Yellow is generally then used to add brownish undertones as necessary.