ΔE 36.3, loose: different enough that you should pick on purpose. Elven Green is noticeably darker, much more muted, cooler than Vivid Volt.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 36). Elven Green is noticeably darker, much more muted, cooler than Vivid Volt.
The same difference applies the other way round: Vivid Volt is noticeably lighter, much more saturated, 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 Vivid Volt on the colour wheel See Elven Green on the colour wheel
All matches: Vivid Volt equivalents · Elven Green equivalents