ΔE 6.0, close: similar, with a visible difference side by side. Valhallan Blizzard is a little darker than Fluor White. They are different kinds of paint: AMMO by Mig Fluor White is a fluorescent or effect paint and Citadel Valhallan Blizzard is a technical paint or medium, 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 6). Valhallan Blizzard is a little darker than Fluor White. They are different kinds of paint.
The same difference applies the other way round: Fluor White 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 Fluor White on the colour wheel See Valhallan Blizzard on the colour wheel
All matches: Fluor White equivalents · Valhallan Blizzard equivalents