Rust vs Flickering Flame

How close are they?

ΔE 15.0, loose: different enough that you should pick on purpose. Flickering Flame is a little lighter, more saturated, warmer than Rust.

Can I use Flickering Flame instead of Rust?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Flickering Flame is a little lighter, more saturated, warmer than Rust.

Can I use Rust instead of Flickering Flame?

The same difference applies the other way round: Rust is a little darker, more muted, cooler.

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.