ΔE 9.9, close: similar, with a visible difference side by side. Eye of Terror is a little darker, cooler than Wyvern Fury.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Eye of Terror is a little darker, cooler than Wyvern Fury.
The same difference applies the other way round: Wyvern Fury is a little lighter, 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 Wyvern Fury on the colour wheel See Eye of Terror on the colour wheel
All matches: Wyvern Fury equivalents · Eye of Terror equivalents