RLM 63 vs Dark Imperial Khaki

How close are they?

ΔE 12.1, fair: the same colour family, but not a straight swap. Dark Imperial Khaki is more saturated, cooler than RLM 63.

Can I use Dark Imperial Khaki instead of RLM 63?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Dark Imperial Khaki is more saturated, cooler than RLM 63.

Can I use RLM 63 instead of Dark Imperial Khaki?

The same difference applies the other way round: RLM 63 is more muted, 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.