What is the difference between Grim Rust and Speed Yellow?

ΔE 76 (loose). Speed Yellow is noticeably lighter, much more saturated, cooler. Swatch colours are estimates.

Grim Rust vs Speed Yellow

Grim Rust

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

Speed Yellow

Brand: Scale75
Range: FX Fluor
Code: SFX06
Type: a fluorescent or effect paint
Swatch: #fbed07 (estimate)

How close are they?

ΔE 75.6, loose: different enough that you should pick on purpose. Speed Yellow is noticeably lighter, much more saturated, cooler than Grim Rust.

Can I use Speed Yellow instead of Grim Rust?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 76). Speed Yellow is noticeably lighter, much more saturated, cooler than Grim Rust.

Can I use Grim Rust instead of Speed Yellow?

The same difference applies the other way round: Grim Rust is noticeably 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 Speed Yellow on the colour wheel

Other Scale75 paints close to Grim Rust

Grim Rust vs Orange Neon (SFX01)FX Fluor · ΔE 34, loose · closer than Speed Yellow
Grim Rust vs Red Ecstasy (SFX07)FX Fluor · ΔE 41, loose · closer than Speed Yellow
Grim Rust vs Acid Pink (SFX02)FX Fluor · ΔE 72, loose · closer than Speed Yellow

Other Army Painter paints close to Speed Yellow

Speed Yellow vs Neon YellowWarpaints Air · ΔE 4, very close · closer than Grim Rust

All matches: Grim Rust equivalents · Speed Yellow equivalents