Dunkelgrau RAL 7021 vs Midnight Purple

How close are they?

ΔE 11.7, fair: the same colour family, but not a straight swap. Midnight Purple is a little darker, more saturated than Dunkelgrau RAL 7021.

Can I use Midnight Purple instead of Dunkelgrau RAL 7021?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Midnight Purple is a little darker, more saturated than Dunkelgrau RAL 7021.

Can I use Dunkelgrau RAL 7021 instead of Midnight Purple?

The same difference applies the other way round: Dunkelgrau RAL 7021 is a little lighter, more muted.

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.