Deep blue mixtures
How to mix navy blue acrylic paint
Navy is a very dark, restrained blue, not black with a token blue addition. Its blue identity must remain visible in thin passages, tints and surrounding light. Build the dark from the blue outward so value falls without the hue disappearing.
Start here
The short answer
Start with ultramarine or phthalo blue, then add a small amount of burnt umber or burnt sienna to lower chroma and value. For a cooler navy, keep more blue or add a little phthalo blue. For a warmer navy, favor ultramarine. Test a thin drawdown and a small tint to confirm that the mixture still reads blue.
Navy check
Keep a visible blue undertone
Mass tone alone is too dark to diagnose accurately.
| Test | What it reveals | Desired sign |
|---|---|---|
| Thin drawdown | Transparent undertone | Clearly blue, not brown. |
| Small tint | Hidden hue bias | Blue-gray family. |
| Dry swatch | Final value and gloss | Deep but separated from black. |
| Context test | Relative color | Blue survives beside nearby darks. |
A navy used for fabric may need a different opacity and chroma from a navy used for a night sky or painted object.
01
Choose the blue character
Ultramarine produces a violet-leaning, often warmer navy. Phthalo blue produces a greener, very strong cool navy. Mixing the two can provide depth while keeping control of bias. Start with the blue already connected to the rest of the painting.
Decide how close the target sits to black. Navy should remain distinguishable from the darkest accent, especially after drying. Reserve a true dark nearby for comparison.
02
Lower chroma with a warm earth
Burnt umber or burnt sienna opposes blue and can deepen it into a chromatic neutral. Add the earth pigment gradually to the blue base, not the other way around. Stop before the thin edge turns brown.
Burnt sienna tends to produce a more colorful blue-brown range, while burnt umber can darken quickly. Actual behavior varies by brand and pigment formula, so compare small measured tests.
03
Diagnose the dark with drawdowns and tints
Spread a thin edge with the palette knife. If it reads brown or neutral gray, restore blue. Then add a tiny sample to white: the resulting tint reveals whether the hidden bias is violet, green or neutral blue.
Do not add white to the master navy merely to inspect it. Keep the test separate so the deep mixture remains available and its proportions stay known.
04
Build a navy value family
For lighter planes, mix a separate blue-gray using navy plus white and, when needed, a touch of the clean blue. For shadows, use more of the blue-earth dark while preserving enough blue to separate the area from black accents.
If the subject is glossy fabric or painted metal, reflected colors may create brighter cyan, violet or warm notes. Navy is the local family, not a command to use one mixture everywhere.
05
Test film thickness and finish
Transparent blue in a thin layer over white can appear brighter than the same recipe applied opaquely. Glossy medium can deepen reflections and make navy look almost black at some angles. Reproduce the intended thickness and finish in the test.
Let the sample dry under stable light, then compare it next to both the target and the painting’s darkest neutral. Record the blue-to-earth parts for the final useful mixture.
Troubleshooting
Keep deep blue from becoming black or brown
Use a tint and thin edge whenever mass tone hides the answer.
| Symptom | Cause | Correction |
|---|---|---|
| Looks black | Too much dark neutral | Restore clean blue and compare after drying. |
| Looks brown in thin paint | Earth pigment dominates | Add blue to a fresh portion. |
| Looks bright royal blue | Chroma or value is too high | Add controlled earth dark, not black immediately. |
| Tint looks green | Blue base leans cyan | Add ultramarine or a violet-blue modifier. |
Free studio printables
Record the test instead of guessing again.
Use the worksheet beside the palette, then keep the dry result with the painting notes. Each PDF is free, low-ink and formatted for US Letter paper.
See both printables and the full methodStudio questions
Questions painters ask
What colors make navy blue acrylic paint?
Blue plus a controlled warm earth makes navy. Ultramarine with burnt umber or burnt sienna is a useful starting pair.
Can I make navy by adding black to blue?
Yes, but black can remove the blue identity quickly. A complementary earth dark offers more control over undertone and chroma.
How can I tell whether navy is too dark?
Compare a dry swatch with the painting’s black accent, then inspect a thin edge and small tint. Navy should still reveal a blue family.