Bramble Grove vs Ironhull Grey

How close are they?

ΔE 15.2, loose: different enough that you should pick on purpose. Ironhull Grey is noticeably lighter, more muted than Bramble Grove.

Can I use Ironhull Grey instead of Bramble Grove?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Ironhull Grey is noticeably lighter, more muted than Bramble Grove.

Can I use Bramble Grove instead of Ironhull Grey?

The same difference applies the other way round: Bramble Grove is noticeably darker, more saturated.

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.