ΔE 16.5, loose: different enough that you should pick on purpose. Light Green RLM25 is noticeably lighter, warmer than Dark Jade.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Light Green RLM25 is noticeably lighter, warmer than Dark Jade.
The same difference applies the other way round: Dark Jade is noticeably darker, 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 Dark Jade on the colour wheel See Light Green RLM25 on the colour wheel
All matches: Dark Jade equivalents · Light Green RLM25 equivalents