Emerald vs Sotek Green

How close are they?

ΔE 19.0, loose: different enough that you should pick on purpose. Sotek Green is noticeably darker, more muted, cooler than Emerald.

Can I use Sotek Green instead of Emerald?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Sotek Green is noticeably darker, more muted, cooler than Emerald.

Can I use Emerald instead of Sotek Green?

The same difference applies the other way round: Emerald is noticeably lighter, 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.