Celestra Grey vs Light Blue RLM65

How close are they?

ΔE 12.8, fair: the same colour family, but not a straight swap. Light Blue RLM65 is warmer than Celestra Grey.

Can I use Light Blue RLM65 instead of Celestra Grey?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Light Blue RLM65 is warmer than Celestra Grey.

Can I use Celestra Grey instead of Light Blue RLM65?

The same difference applies the other way round: Celestra Grey is cooler.

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.