ΔE 7.7, close: similar, with a visible difference side by side. Viridian Green Hue is a little lighter, warmer than Sons of Horus Green. They are different kinds of paint: Citadel Sons of Horus Green is an opaque base/layer paint and Golden Viridian Green Hue is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Viridian Green Hue is a little lighter, warmer than Sons of Horus Green. They are different kinds of paint.
The same difference applies the other way round: Sons of Horus Green is a little darker, 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.
See Sons of Horus Green on the colour wheel See Viridian Green Hue on the colour wheel
All matches: Sons of Horus Green equivalents · Viridian Green Hue equivalents