Dark Imperial Khaki vs Dark Seagray

How close are they?

ΔE 7.5, close: similar, with a visible difference side by side. Dark Seagray is a little darker, warmer than Dark Imperial Khaki.

Can I use Dark Seagray instead of Dark Imperial Khaki?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Dark Seagray is a little darker, warmer than Dark Imperial Khaki.

Can I use Dark Imperial Khaki instead of Dark Seagray?

The same difference applies the other way round: Dark Imperial Khaki is a little lighter, cooler.

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.