What is the difference between Grim Rust and Fluorescent Red?

ΔE 47 (loose). Fluorescent Red is a little lighter, much more saturated, cooler. Swatch colours are estimates.

Grim Rust vs Fluorescent Red

Grim Rust

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

Fluorescent Red

Brand: Mr. Hobby
Range: Mr. Color
Code: C-171
Type: a fluorescent or effect paint
Swatch: #ed1c24 (estimate)

How close are they?

ΔE 46.6, loose: different enough that you should pick on purpose. Fluorescent Red is a little lighter, much more saturated, cooler than Grim Rust.

Can I use Fluorescent Red instead of Grim Rust?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 47). Fluorescent Red is a little lighter, much more saturated, cooler than Grim Rust.

Can I use Grim Rust instead of Fluorescent Red?

The same difference applies the other way round: Grim Rust is a little darker, much 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.

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

Other Mr. Hobby paints close to Grim Rust

Grim Rust vs Fluorescent Orange (C-173)Mr. Color · ΔE 45, loose · closer than Fluorescent Red
Grim Rust vs Fluorescent Orange (N-98)Acrysion · ΔE 45, loose · closer than Fluorescent Red
Grim Rust vs Fluorescent Red (N-101)Acrysion · ΔE 47, loose

Other Army Painter paints close to Fluorescent Red

Fluorescent Red vs Neon YellowWarpaints Air · ΔE 106, loose

All matches: Grim Rust equivalents · Fluorescent Red equivalents