Orange Flare vs Orange Rust

How close are they?

ΔE 14.2, fair: the same colour family, but not a straight swap. Orange Rust is noticeably darker, more muted than Orange Flare.

Can I use Orange Rust instead of Orange Flare?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Orange Rust is noticeably darker, more muted than Orange Flare.

Can I use Orange Flare instead of Orange Rust?

The same difference applies the other way round: Orange Flare 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.