What Colors Make Rust?
Orange, red and brown make rust. It is a darkened, earthy orange — the brown is what gives it the oxidised metal look.
Orange + Red + Brown = Rust
Orange
3 parts
Red
1 part
Brown
1 part
Rust
The most controllable route. Adjust the brown last to set how earthy versus fiery it looks.
Orange + Blue (a touch) = Rust
Orange
6 parts
Blue
a touch
Rust
Blue is orange’s complement, so a touch neutralises and darkens it straight into rust. Add it very slowly.
Red + Yellow + Black = Rust
Red
3 parts
Yellow
2 parts
Black
a speck
Rust
Builds the orange from primaries, then knocks it down. Lean red-heavy — a yellow-heavy mix reads as ochre.
Adjusting your rust
To lighten: Add white or yellow for terracotta and clay.
To darken: Add more brown or a speck of black for burnt sienna and deep russet.
To mute or soften: Add a little more blue to push it toward a weathered, brick-like rust.
Mixing paint vs. mixing light
The recipes above describe subtractive mixing — how paint, ink and pigment behave. Each pigment absorbs part of the spectrum, so the more you add, the darker the mixture gets.
Screens work the opposite way, using additive mixing with red, green and blue light: the more you add, the brighter it gets. With light (RGB), rust is a dark, low-saturation orange — moderate red light, less green, and almost no blue, e.g. #A9481C.
Frequently asked about making rust
What colors make rust?
Orange, red and brown make rust. It is a darkened, earthy orange — the brown is what gives it the oxidised metal look.
What two colors make rust?
Orange + Red + Brown makes rust. The most controllable route. Adjust the brown last to set how earthy versus fiery it looks.
How do you make rust lighter or darker?
Add white or yellow for terracotta and clay. Add more brown or a speck of black for burnt sienna and deep russet.
Is mixing rust paint the same as mixing rust light?
No. Paint mixes subtractively while light mixes additively. With light (RGB), rust is a dark, low-saturation orange — moderate red light, less green, and almost no blue, e.g. #A9481C.