Mix red and yellow to create orange
Add a small amount of blue to the orange to turn it brown
Adjust to taste by adding more red/yellow (warmer) or more blue (darker/greyer)
If using paint, start with a small batch and mix gradually
For a lighter brown, add white
For a darker brown, add more of the blue/black component or reduce added white
For chocolate-brown, use more red and a touch of black
For warm brown (umber), use more red/yellow and less blue
For cool brown (taupe), use more blue and a small amount of black
If using food coloring, start with a small amount of red and yellow, then add tiny amounts of blue until brown forms
For baking, combine cocoa powder, a sweetener, and a small amount of salt to deepen brown color