What is the difference between Red Fluor and Grim Rust?

ΔE 40 (loose). Grim Rust is a little darker, much more muted, warmer. Swatch colours are estimates.

Red Fluor vs Grim Rust

Red Fluor

Brand: AK Interactive
Range: Glow Precision Fluor
Code: AK12110
Type: a fluorescent or effect paint
Swatch: #e63327 (estimate)

Grim Rust

Brand: Army Painter
Range: John Blanche Vol. 1-4
Code: Vol. 2 Effects
Type: a fluorescent or effect paint
Swatch: #a6591a (estimate)

How close are they?

ΔE 39.6, loose: different enough that you should pick on purpose. Grim Rust is a little darker, much more muted, warmer than Red Fluor.

Can I use Grim Rust instead of Red Fluor?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 40). Grim Rust is a little darker, much more muted, warmer than Red Fluor.

Can I use Red Fluor instead of Grim Rust?

The same difference applies the other way round: Red Fluor is a little lighter, much more saturated, 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.

See Red Fluor on the colour wheel See Grim Rust on the colour wheel

Other Army Painter paints close to Red Fluor

Red Fluor vs Neon YellowWarpaints Air · ΔE 100, loose

Other AK Interactive paints close to Grim Rust

Grim Rust vs Fluorescent Orange (AK11081)3rd Gen Standard · ΔE 31, loose · closer than Red Fluor
Grim Rust vs Orange Fluor (AK12113)Glow Precision Fluor · ΔE 32, loose · closer than Red Fluor
Grim Rust vs Light Orange Fluor (AK12112)Glow Precision Fluor · ΔE 39, loose · closer than Red Fluor

All matches: Red Fluor equivalents · Grim Rust equivalents