Twin Sons vs Dusken Green

How close are they?

ΔE 17.8, loose: different enough that you should pick on purpose. Dusken Green is a little lighter, much more muted than Twin Sons.

Can I use Dusken Green instead of Twin Sons?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Dusken Green is a little lighter, much more muted than Twin Sons.

Can I use Twin Sons instead of Dusken Green?

The same difference applies the other way round: Twin Sons is a little darker, much more saturated.

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.