ΔE 8.1, close: similar, with a visible difference side by side. Crusader Skin is a little darker than Gnome Skin. They are different kinds of paint: AMMO by Mig Gnome Skin is an opaque base/layer paint and Army Painter Crusader Skin is a one-coat contrast-style 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). Crusader Skin is a little darker than Gnome Skin. They are different kinds of paint.
The same difference applies the other way round: Gnome Skin is a little lighter.
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 Gnome Skin on the colour wheel See Crusader Skin on the colour wheel
All matches: Gnome Skin equivalents · Crusader Skin equivalents