How to Mix Phthalo Blue in Acrylic

A staining, intense green-shade blue. Tiny amounts go a very long way. This guide gives you the pigment ratios that land on #0F3B6E in acrylic, using the same solver that powers the Chromilla mixer.

Target

Phthalo Blue

#0F3B6E

Mixed result

98% match

From these pigments

#0F3A6A

Pigment recipe

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. Viridian Green
PG18
61%
2. Phthalo Blue
PB15
39%

What colors make Phthalo Blue?

Viridian Green and Phthalo Blue, in roughly a 61:39 ratio.

How to make Phthalo Blue in acrylic

Start with Viridian Green at about 61% as your acrylic base, then work in Phthalo Blue in the order above. Adjust in 5% steps until the swatch reads #0F3B6E.

Why mix Phthalo Blue instead of buying it

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

That pigment is a very strong tinter, add it a touch at a time or it will swallow the mix.

Get this recipe for your paint brand

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

Open in mixer

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.