ΔE 17.0, loose: different enough that you should pick on purpose. Gryph-Charger Grey is noticeably darker than Ashen Stone.
✓ Herrick Games paint comparison chart lists these two as equivalents.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Gryph-Charger Grey is noticeably darker than Ashen Stone.
The same difference applies the other way round: Ashen Stone 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 Ashen Stone on the colour wheel See Gryph-Charger Grey on the colour wheel
All matches: Ashen Stone equivalents · Gryph-Charger Grey equivalents