Red Oxide Tint vs Old Rose

How close are they?

ΔE 21.9, loose: different enough that you should pick on purpose. Old Rose is noticeably darker, more saturated, cooler than Red Oxide Tint.

Can I use Old Rose instead of Red Oxide Tint?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Old Rose is noticeably darker, more saturated, cooler than Red Oxide Tint.

Can I use Red Oxide Tint instead of Old Rose?

The same difference applies the other way round: Red Oxide Tint is noticeably lighter, more muted, 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.