ΔE 7.0, close: similar, with a visible difference side by side. Emerald Scream is a little lighter, cooler than Pharaoh Guard.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Emerald Scream is a little lighter, cooler than Pharaoh Guard.
The same difference applies the other way round: Pharaoh Guard is a little darker, 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.
See Pharaoh Guard on the colour wheel See Emerald Scream on the colour wheel
All matches: Pharaoh Guard equivalents · Emerald Scream equivalents