Flickering Flame vs Mars Orange

How close are they?

ΔE 18.7, loose: different enough that you should pick on purpose. Mars Orange is noticeably darker, more muted than Flickering Flame.

Can I use Mars Orange instead of Flickering Flame?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Mars Orange is noticeably darker, more muted than Flickering Flame.

Can I use Flickering Flame instead of Mars Orange?

The same difference applies the other way round: Flickering Flame is noticeably lighter, 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.