ΔE 11.7, fair: the same colour family, but not a straight swap. Acid Green is noticeably darker than Garaghak's Sewer.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Acid Green is noticeably darker than Garaghak's Sewer.
The same difference applies the other way round: Garaghak's Sewer is noticeably lighter.
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 Garaghak's Sewer on the colour wheel See Acid Green on the colour wheel
All matches: Garaghak's Sewer equivalents · Acid Green equivalents