Demon Red vs Monster Brown

How close are they?

ΔE 12.7, fair: the same colour family, but not a straight swap. Monster Brown is a little lighter, warmer than Demon Red.

Can I use Monster Brown instead of Demon Red?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Monster Brown is a little lighter, warmer than Demon Red.

Can I use Demon Red instead of Monster Brown?

The same difference applies the other way round: Demon Red is a little darker, cooler.

ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.