ΔE 10.9, fair: the same colour family, but not a straight swap. Dark Sea Ben is a little lighter, cooler than Thunder Storm.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Dark Sea Ben is a little lighter, cooler than Thunder Storm.
The same difference applies the other way round: Thunder Storm is a little darker, 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 Thunder Storm on the colour wheel See Dark Sea Ben on the colour wheel
All matches: Thunder Storm equivalents · Dark Sea Ben equivalents