How to Mix Rust in Acrylic
A burnt orange-brown rust. This guide gives you the pigment ratios that land on #9C4A24 in acrylic, using the same solver that powers the Chromilla mixer.
Target
Rust
#9C4A24
Mixed result
99% matchFrom these pigments
#9B4A24
Pigment recipe
Ratios calibrated for acrylic. Start with the dominant pigment, add the modifiers in the order below, and adjust in 5% steps to your target swatch.
1. Raw Umber
PBr7
36%2. Alizarin Crimson
PR83
35%3. Titanium White
PW6
29%
What colours make Rust?
Raw Umber, Alizarin Crimson, and Titanium White, in roughly a 36:35:29 ratio.
How to make Rust in acrylic
Start with Raw Umber at about 36% as your acrylic base, then work in Alizarin Crimson and Titanium White in the order above. Adjust in 5% steps until the swatch reads #9C4A24.
Why mix Rust instead of buying it
Mixing Rust yourself lets you approximate an expensive or hard to find tube from pigments you already own, match Rust across paint brands whose factory tubes differ, and rebuild the exact colour when you run out mid painting. The recipe above is the working starting point.
Common mistakes
White cools and chalks a mix as you add it, so tint in small steps and stop before it goes pastel.
Get this recipe for your paint brand
Open the live mixer with Rust + acrylic pre-loaded and calibrate to your tubes.
Deep-dive guide
How to mix Rust, the long version
Common mistakes, per-brand recipes, and the honest limits when the target sits outside what real paint can reach.
Read the guideRelated mixing guides
Pigment mixing is subtractive, so small ratio changes matter. The mixer refines this recipe to your brand and updates on the fly.