Chromilla paint mixing tool

How to mix

How to mix Rust paint

Real pigment ratios for rust (#9C4A24) in acrylic, oil and watercolour. The recipes below come straight from Chromilla’s mixer, calibrated to real manufacturer paint data.

Target colour

Rust

#9C4A24

Live mixer

Open this colour in the mixer

The Chromilla mixer is pre-loaded with #9C4A24. Change your brand, medium or palette and the recipe updates instantly.

Open in mixer

Recipes by medium

Checked August 2026

Generic pigment ratios, the same ones the Chromilla mixer solves for. Open the mixer to swap in your own brand and tubes.

acrylic

Pigment recipe

99% match

Mixed result

#9B4A24

ΔE 0.2

  1. 1. Raw Umber (PBr7)36%
  2. 2. Alizarin Crimson (PR83)35%
  3. 3. Titanium White (PW6)29%

Dry-down

Dries slightly darker and a touch warmer.

oil

Pigment recipe

99% match

Mixed result

#9B4A24

ΔE 0.2

  1. 1. Raw Umber (PBr7)36%
  2. 2. Alizarin Crimson (PR83)35%
  3. 3. Titanium White (PW6)29%

Dry-down

Dries true to colour.

watercolour

Pigment recipe

99% match

Mixed result

#9B4A24

ΔE 0.2

  1. 1. Raw Umber (PBr7)36%
  2. 2. Alizarin Crimson (PR83)35%
  3. 3. Titanium White (PW6)29%

Dry-down

Dries slightly darker and a touch cooler.

Common mistakes when mixing rust

Rust is a dark, warm orange-red, and the mistake is starting from bright orange and trying to darken it, which usually just dulls it toward brown too fast. Starting from a red-orange earth pigment (a burnt sienna or similar) and adjusting from there keeps the warmth and darkness together instead of losing one for the other. A little black goes further than people expect here, use less than you think you need.

Short recipes by medium

Straight-to-the-ratio versions of rust in each medium, from the Chromilla mix library.

Related colours

More colours to try once you have rust sorted.