ΔE 13.1, fair: the same colour family, but not a straight swap. Ghost Green is more saturated, warmer than Hellblau RLM 65.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Ghost Green is more saturated, warmer than Hellblau RLM 65.
The same difference applies the other way round: Hellblau RLM 65 is more muted, 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.
See Hellblau RLM 65 on the colour wheel See Ghost Green on the colour wheel
All matches: Hellblau RLM 65 equivalents · Ghost Green equivalents