Barrel Grey vs Dark Brown RLM61

How close are they?

ΔE 12.5, fair: the same colour family, but not a straight swap. Dark Brown RLM61 is noticeably lighter than Barrel Grey.

Can I use Dark Brown RLM61 instead of Barrel Grey?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Dark Brown RLM61 is noticeably lighter than Barrel Grey.

Can I use Barrel Grey instead of Dark Brown RLM61?

The same difference applies the other way round: Barrel Grey is noticeably darker.

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.