Underbelly Blue vs Decal Fix

How close are they?

ΔE 10.6, fair: the same colour family, but not a straight swap. Decal Fix is a little lighter, more muted than Underbelly Blue.

Can I use Decal Fix instead of Underbelly Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Decal Fix is a little lighter, more muted than Underbelly Blue.

Can I use Underbelly Blue instead of Decal Fix?

The same difference applies the other way round: Underbelly Blue is a little darker, more saturated.

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.