ΔE 10.1, fair: the same colour family, but not a straight swap. Light Blue RLM78 is a little lighter than Bramble Grove.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Light Blue RLM78 is a little lighter than Bramble Grove.
The same difference applies the other way round: Bramble Grove is a little 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.
See Bramble Grove on the colour wheel See Light Blue RLM78 on the colour wheel
All matches: Bramble Grove equivalents · Light Blue RLM78 equivalents