Traitor Red vs Choco Brown

How close are they?

ΔE 15.2, loose: different enough that you should pick on purpose. Choco Brown is a little darker, much more saturated than Traitor Red.

Can I use Choco Brown instead of Traitor Red?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Choco Brown is a little darker, much more saturated than Traitor Red.

Can I use Traitor Red instead of Choco Brown?

The same difference applies the other way round: Traitor Red is a little lighter, much more muted.

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.