Noble Skin vs Basilisk Green

How close are they?

ΔE 16.2, loose: different enough that you should pick on purpose. Basilisk Green is a little darker, cooler than Noble Skin.

Can I use Basilisk Green instead of Noble Skin?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Basilisk Green is a little darker, cooler than Noble Skin.

Can I use Noble Skin instead of Basilisk Green?

The same difference applies the other way round: Noble Skin is a little lighter, 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.