mix red and green to make this colour
Color mixing By convention, the three primary colors in additive mixing are red, green, and blue. In the absence of color, when no colors are showing, the result is black. If all three primary colors are showing, the result is white. When red and green combine, the result is yellow. When red and blue combine, the result is magenta. When blue and green combine, the result is cyan.
Red velvet cake Red Velvet cake is traditionally a red, red-brown, or "mahogany" colored[1] layer cake, layered with white cream cheese icing or Ermine[2] frosting (sometimes called "cooked roux" frosting). It has a distinctive fluffy texture owing to the gas-producing reaction of alkaline buttermilk with acidic vinegar and/or acidic non-alkalized cocoa.[1] The cake is commonly served on Christmas or Valentine's Day. Common modern red velvet cake is made with red dye,[3][4] however the red color was originally due to non-Dutched anthocyanin-rich cocoa.[1]