ΔE 13.2, fair: the same colour family, but not a straight swap. Bright Green Blue is noticeably darker, cooler than Mossy Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Bright Green Blue is noticeably darker, cooler than Mossy Green.
The same difference applies the other way round: Mossy Green is noticeably lighter, 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.
See Mossy Green on the colour wheel See Bright Green Blue on the colour wheel
All matches: Mossy Green equivalents · Bright Green Blue equivalents