ΔE 14.7, fair: the same colour family, but not a straight swap. Wrack White is a little lighter, more muted than Leviathan Light.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Wrack White is a little lighter, more muted than Leviathan Light.
The same difference applies the other way round: Leviathan Light is a little darker, more saturated.
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 Wrack White on the colour wheel
All matches: Leviathan Light equivalents · Wrack White equivalents