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