Mars Red vs Naphthol Pink

How close are they?

ΔE 12.1, fair: the same colour family, but not a straight swap. Naphthol Pink is a little lighter, cooler than Mars Red.

Can I use Naphthol Pink instead of Mars Red?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Naphthol Pink is a little lighter, cooler than Mars Red.

Can I use Mars Red instead of Naphthol Pink?

The same difference applies the other way round: Mars Red 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.