Emerald Scream vs Splinter Green

How close are they?

ΔE 19.2, loose: different enough that you should pick on purpose. Splinter Green is a little darker, more muted, warmer than Emerald Scream.

Can I use Splinter Green instead of Emerald Scream?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Splinter Green is a little darker, more muted, warmer than Emerald Scream.

Can I use Emerald Scream instead of Splinter Green?

The same difference applies the other way round: Emerald Scream is a little lighter, more saturated, cooler.

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.