What two colors make ultramarine blue?

Chromilla's oil recipe uses 3 tubes rather than two: 93% Ultramarine Blue, 4% Titanium White and 3% Yellow Ochre. Ultramarine Blue leads the mix. Chromilla's model predicts a 99% dry match against the target, scored against its own color model, not a measured paint-out.

What is the hex code for ultramarine blue?

Chromilla uses #2A3A8C as the target for ultramarine blue. The oil recipe is predicted to dry to about #2B3A8B.

Can I mix ultramarine blue without black?

Yes. Chromilla's oil recipe uses no black: 93% Ultramarine Blue, 4% Titanium White and 3% Yellow Ochre.

How to Mix Ultramarine Blue in Oil

Quick answer

To mix ultramarine blue (#2A3A8C) in oil, use 93% Ultramarine Blue, 4% Titanium White and 3% Yellow Ochre. Chromilla's model predicts a 99% 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.

Adjust for my paints

Target

Ultramarine Blue

#2A3A8C

Predicted dry result

99% match when dry

Mix to #2B3A8B. It dries true to color.

Ultramarine Blue in oil: tube ratios, and ml for a 100 ml batch
Paint	Pigment	Share	100 ml batch
Ultramarine Blue	PB29	93%	93 ml
Titanium White	PW6	4%	4 ml
Yellow Ochre	PY43	3%	3 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 deep violet-leaning blue. Warm, granulating, and endlessly useful. This guide gives you the pigment ratios that land on #2A3A8C in oil, using the same solver that powers the Chromilla mixer.

Pigment recipe

Checked August 2026

Ratios calibrated for oil. Start with the dominant pigment, add the modifiers in the order below, and adjust in 5% steps to your target swatch.

1. Ultramarine Blue
PB29
93%
2. Titanium White
PW6
4%
3. Yellow Ochre
PY43
3%

What colors make Ultramarine Blue?

Ultramarine Blue, Titanium White, and Yellow Ochre, in roughly a 93:4:3 ratio.

How to make Ultramarine Blue in oil

Start with Ultramarine Blue at about 93% as your oil base, then work in Titanium White and Yellow Ochre in the order above. Adjust in 5% steps until the swatch reads #2A3A8C.

Why mix Ultramarine Blue instead of buying it

Mixing Ultramarine Blue yourself lets you approximate an expensive or hard to find tube from pigments you already own, match Ultramarine Blue 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.

Common mistakes

White cools and chalks a mix as you add it, so tint in small steps and stop before it goes pastel.

Variations on Ultramarine Blue

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.

Lighter Ultramarine Blue

#3E51A6

6 parts Ultramarine Blue, 2 parts Viridian Green and 1 part Titanium White. Chromilla's model predicts a 99% dry match against the target, scored against its own color model, not a measured paint-out.

Darker Ultramarine Blue

#192273

3 parts Ultramarine Blue to 1 part Phthalo Blue. Chromilla's model predicts a 92% dry match against the target, scored against its own color model, not a measured paint-out.

Warmer Ultramarine Blue

#3D348A

9 parts Ultramarine Blue to 1 part Viridian Green. Chromilla's model predicts a 90% dry match against the target, scored against its own color model, not a measured paint-out.

Cooler Ultramarine Blue

#1C3D8C

7 parts Ultramarine Blue, 4 parts Phthalo Blue and 1 part Titanium White. Chromilla's model predicts a 99% dry match against the target, scored against its own color model, not a measured paint-out.

Ultramarine Blue questions

What two colors make ultramarine blue?: Chromilla's oil recipe uses 3 tubes rather than two: 93% Ultramarine Blue, 4% Titanium White and 3% Yellow Ochre. Ultramarine Blue leads the mix. Chromilla's model predicts a 99% dry match against the target, scored against its own color model, not a measured paint-out.
How do you make ultramarine blue paint lighter without losing the hue?: Re-balance the mix instead of only adding white. For a lighter ultramarine blue (#3E51A6) in oil, Chromilla mixes 6 parts Ultramarine Blue, 2 parts Viridian Green and 1 part Titanium White. Chromilla's model predicts a 99% dry match against the target, scored against its own color model, not a measured paint-out.
What is the hex code for ultramarine blue?: Chromilla uses #2A3A8C as the target for ultramarine blue. The oil recipe is predicted to dry to about #2B3A8B.
Can I mix ultramarine blue without black?: Yes. Chromilla's oil recipe uses no black: 93% Ultramarine Blue, 4% Titanium White and 3% Yellow Ochre.

Ultramarine Blue in other mediums

Ultramarine Blue in Acrylic: 93% Ultramarine Blue, 4% Titanium White and 3% Yellow Ochre, predicted 92% dry match by Chromilla's color model.
Ultramarine Blue in Watercolor: 93% Ultramarine Blue, 4% Titanium White and 3% Yellow Ochre, predicted 95% dry match by Chromilla's color model.

Get this recipe for your paint brand

Open the live mixer with Ultramarine Blue + oil pre-loaded and calibrate to your tubes.

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Technique guides for this color

Related mixing guides

Pigment mixing is subtractive, so small ratio changes matter. The mixer refines this recipe to your brand and updates on the fly.