ΔE 10.2, fair: the same colour family, but not a straight swap. Eclipse Grey is noticeably darker than Eshin Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Eclipse Grey is noticeably darker than Eshin Grey.
The same difference applies the other way round: Eshin Grey 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 Eshin Grey on the colour wheel See Eclipse Grey on the colour wheel
All matches: Eshin Grey equivalents · Eclipse Grey equivalents