Lighter Indian Red
#A6514A
7 parts Burnt Umber, 6 parts Titanium White and 4 parts Alizarin Crimson. Chromilla's model predicts a 91% dry match against the target, scored against its own color model, not a measured paint-out.
To mix indian red (#8C3A34) in acrylic, use 65% Yellow Ochre, 19% Alizarin Crimson and 16% Viridian Green. Chromilla's model predicts a 94% dry match against the target, scored against its own color model, not a measured paint-out. Chromilla is a web-based paint color mixer that turns any color, from a photo, the camera or a hex code, into exact paint-tube ratios for acrylic, oil and watercolor, using Kubelka-Munk pigment mixing and aiming at the color after it dries.
Target
Indian Red
#8C3A34
Predicted dry result
94% match when dryMix to #8D3A35 while wet. It dries to about #82342E.
| Paint | Pigment | Share | 100 ml batch |
|---|---|---|---|
| Yellow Ochre | PY43 | 65% | 65 ml |
| Alizarin Crimson | PR83 | 19% | 19 ml |
| Viridian Green | PG18 | 16% | 16 ml |
How we calculated this: Kubelka-Munk pigment mixing, then a per-medium dry shift, scored with CIEDE2000. Method and accuracy benchmark. Last checked August 2026.
Terms used here: Tinting strength, Dry shift, Kubelka-Munk, Delta E (dE2000), Pigment code, Gamut.
A dense, opaque cool earth red. Iron-oxide backbone of muted portraits. This guide gives you the pigment ratios that land on #8C3A34 in acrylic, using the same solver that powers the Chromilla mixer.
Checked August 2026
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. Yellow Ochre
PY43
2. Alizarin Crimson
PR83
3. Viridian Green
PG18
Yellow Ochre, Alizarin Crimson, and Viridian Green, in roughly a 65:19:16 ratio.
Start with Yellow Ochre at about 65% as your acrylic base, then work in Alizarin Crimson and Viridian Green in the order above. Adjust in 5% steps until the swatch reads #8C3A34.
Mixing Indian Red yourself lets you approximate an expensive or hard to find tube from pigments you already own, match Indian Red across paint brands whose factory tubes differ, and rebuild the exact color when you run out mid painting. The recipe above is the working starting point.
Overshooting on Yellow Ochre is the usual failure, add it in 5% steps and compare against the target between each pass.
Each variation is its own target (lighter and darker move OKLCH lightness by 0.08; warmer and cooler turn the hue 12 degrees toward red or blue), solved fresh.
#A6514A
7 parts Burnt Umber, 6 parts Titanium White and 4 parts Alizarin Crimson. Chromilla's model predicts a 91% dry match against the target, scored against its own color model, not a measured paint-out.
#72231F
6 parts Cadmium Red, 3 parts Alizarin Crimson and 1 part Ultramarine Blue. Chromilla's model predicts a 95% dry match against the target, scored against its own color model, not a measured paint-out.
#8C3A31
7 parts Burnt Umber, 3 parts Alizarin Crimson and 2 parts Titanium White. Chromilla's model predicts a 93% dry match against the target, scored against its own color model, not a measured paint-out.
#8B3843
6 parts Viridian Green, 5 parts Alizarin Crimson, 2 parts Titanium White and 2 parts Cadmium Red. Chromilla's model predicts a 92% dry match against the target, scored against its own color model, not a measured paint-out.
Open the live mixer with Indian Red + acrylic pre-loaded and calibrate to your tubes.
Pigment mixing is subtractive, so small ratio changes matter. The mixer refines this recipe to your brand and updates on the fly.