Choco Brown vs Black Red

How close are they?

ΔE 15.9, loose: different enough that you should pick on purpose. Black Red is noticeably lighter, more muted, cooler than Choco Brown.

Can I use Black Red instead of Choco Brown?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Black Red is noticeably lighter, more muted, cooler than Choco Brown.

Can I use Choco Brown instead of Black Red?

The same difference applies the other way round: Choco Brown is noticeably darker, more saturated, warmer.

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.