ΔE 6.3, close: similar, with a visible difference side by side. Sons of Horus Green is more muted, cooler than Seawater.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Sons of Horus Green is more muted, cooler than Seawater.
The same difference applies the other way round: Seawater is 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.
See Seawater on the colour wheel See Sons of Horus Green on the colour wheel
All matches: Seawater equivalents · Sons of Horus Green equivalents