ΔE 6.4, close: similar, with a visible difference side by side. Flanker Light Blue is a little darker than Leviathan Light.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Flanker Light Blue is a little darker than Leviathan Light.
The same difference applies the other way round: Leviathan Light 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 Leviathan Light on the colour wheel See Flanker Light Blue on the colour wheel
All matches: Leviathan Light equivalents · Flanker Light Blue equivalents