Blackert Brown vs Athena Skin

How close are they?

ΔE 18.3, loose: different enough that you should pick on purpose. Athena Skin is a little lighter, more saturated, cooler than Blackert Brown.

Can I use Athena Skin instead of Blackert Brown?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Athena Skin is a little lighter, more saturated, cooler than Blackert Brown.

Can I use Blackert Brown instead of Athena Skin?

The same difference applies the other way round: Blackert Brown is a little darker, more muted, 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.