Quick answer
To darken a color without black, add a little of its complement (violet for yellow, green for red, orange for blue), or a dark like ultramarine or burnt umber. Add it in small amounts. The color gets darker and calmer but stays in the same family, so the shadow still looks lit.
On this page
Why black makes shadows look dead
Adding black to a color lowers its value, which is what you want in a shadow. But it also lowers chroma quickly and can shift the hue. Most black paints aren't perfectly neutral.
Ivory and mars blacks lean warm or cool, and in mixtures many blacks act like a very dark, dull blue. The classic example is yellow + black. You might expect dark yellow, but you get an olive green. Red plus black tends toward a brownish maroon.
Real shadows aren't simply "the same color with the light turned down." They're lit by other sources, like the sky, nearby surfaces and bounced light, so they carry their own color, often cooler or warmer than the lit side.
Mixing shadows from colored pigments lets you keep that life. Black isn't forbidden. Many painters use it skillfully. It's just a strong ingredient that's easy to overdo.
Try it: Darken a red without black
Open full mixer →Four ways to darken a color without black
1. Add the complement
Mixing a little of a color's complement (red ↔ green, blue ↔ orange, yellow ↔ violet) lowers both value and saturation in a natural-looking way. Start with a tiny amount, roughly one part complement to five or more parts color. Strong complements like phthalo green or dioxazine purple need even less.
2. Add ultramarine blue
Ultramarine is a dark, slightly reddish blue that cools and deepens most colors without killing them. It's the go-to for cool shadows: outdoor scenes, snow, skies reflected in shadowed planes. Watch out with yellows, though. Yellow plus blue makes green, so for yellow objects use violet or umber instead.
3. Add burnt umber
Burnt umber is a dark, warm earth brown. It darkens with a warm, earthy feel that suits portraits, interiors under lamplight and natural objects. Raw umber does the same with a cooler, slightly greenish lean.
4. Mix a chromatic black
When you truly need a near-black, mix one from colors: ultramarine + burnt umber, or alizarin crimson + phthalo green. Tip the balance to make it warmer or cooler. Chromatic blacks harmonize with the rest of the painting because they're built from the same pigments. See how to mix black for more recipes.
Shadow color chart
A quick lookup: find the color of your object, then try the complement first. The swatch shows a typical shadow mix.
| Object color | Darken it with | Also try |
|---|---|---|
| Yellow (banana, lemon) | A little violet | Raw umber, or yellow ochre for a warm shade |
| Orange | Ultramarine blue | Burnt sienna + a touch of blue |
| Red (apple, tomato) | Phthalo green or viridian | Alizarin crimson + ultramarine |
| Green (leaves) | Alizarin crimson | Ultramarine, or burnt sienna |
| Blue | Burnt sienna (an earth orange) | Burnt umber |
| Violet | Yellow ochre, sparingly | Ultramarine for a cooler shade |
| Skin | A touch of ultramarine or green | Burnt umber + alizarin crimson |
| White (egg, cloth) | A pale blue-grey | A pale violet-grey in warm light |
Light temperature and shadow color
A widely used guideline, though not a law of physics, is that warm light tends to produce relatively cool shadows, and cool light relatively warm shadows. Under a warm lamp, shadows look cooler by contrast.
In open daylight, shadows pick up blue from the sky. Treat it as a starting point and always check your subject. The other reliable rule is that shadows usually drop in value more than they change in hue.
A rounded form shows several zones: the light side, the core shadow (darkest, where the form turns away from the light), reflected light (bounced light, a little lighter than the core), and the cast shadow on the surface below, darkest right where the object touches it. Try them in the shadow & highlight generator, which paints a sphere for any base color.
Common shadow mistakes
- Shadows that are too light. Beginners often hold back. Compare the shadow to the darkest dark and the lightest light in the scene, not just to the lit side next to it.
- The same shadow mix everywhere. A red apple and a green leaf under the same light still need different shadow mixes, because each shadow starts from its own local color.
- Too much contrast in the shadows. Detail and color variation inside shadow areas are usually quieter than in the light. Keep shadow values close together.
- Forgetting reflected light. A shadow that's uniformly dark looks pasted on. A slightly lighter, often warmer edge from bounced light makes forms feel round.
- Muddy shadows from over-mixing. Stick to two or three pigments. In watercolor and oil, glazing a transparent shadow color over dry paint often looks cleaner than mixing it in.
Step by step: mixing a shadow
- Mix the local (lit) color first and set aside a pile of it.
- Take some of that pile and add a small amount of your darkening agent: complement, ultramarine or umber.
- Squint and compare values. Keep adding in small amounts until the value matches the shadow in your reference.
- Adjust temperature: a touch of blue to cool, a touch of sienna or red to warm.
- Place it next to the lit color and judge the pair, not the shadow alone.
Recipes by medium
Proportions are starting points in parts by volume. Pigment strength varies by brand, so add strong colors gradually. The swatches are computed with Pigmento's pigment-mixing model and are approximations.
Red in shadow
5 Cadmium Red Light + 1 Phthalo Green (BS) (parts). Phthalo green is strong, so start with a speck. It becomes a deep, rich crimson-brown.
Cool shadow for any color
3 Cadmium Orange + 1 Ultramarine Blue (parts). Ultramarine deepens and cools. Here it turns orange toward a shadowed terracotta.
Chromatic black
1 Ultramarine Blue + 1 Burnt Umber (parts). More ultramarine for cool black, more umber for warm.
Yellow in shadow
4 Cadmium Yellow Medium + 1 Dioxazine Purple (parts). Violet darkens yellow without turning it green the way black or blue would.
Warm shadow
3 Cadmium Red Light + 1 Burnt Umber (parts). Natural for skin, wood and anything under warm light.
Deep transparent dark
1 Alizarin Crimson + 1 Phthalo Green (BS) (parts). A glowing near-black for glazes and the darkest accents.
Blue-violet shadow wash
2 Ultramarine Blue + 1 Alizarin Crimson (parts). A classic transparent shadow for landscapes. Glaze it over dry color.
Neutral shadow
1 Ultramarine Blue + 1 Burnt Sienna (parts). It granulates beautifully. More sienna for warm shadows, more blue for cool.
Green in shadow
3 Sap Green + 1 Alizarin Crimson (parts). Crimson deepens greens naturally for foliage shadows.
Paints used in this lesson
Shop links coming soon- Cadmium Red Light
- Phthalo Green (BS)
- Cadmium Orange
- Ultramarine Blue
- Burnt Umber
- Cadmium Yellow Medium
- Dioxazine Purple
- Alizarin Crimson
- Burnt Sienna
- Sap Green
Student-grade paints work for every recipe here. Single-pigment artist paints mix cleaner and stronger. We may add affiliate links to paint sets later, and they will be clearly marked.
Frequently asked questions
What can I use instead of black to darken paint?
Use the color's complement, ultramarine blue, burnt umber, or a chromatic black mixed from ultramarine and burnt umber (or alizarin crimson and phthalo green). Each darkens while keeping the color more alive than black.
Why does yellow turn green when I add black?
Most black pigments behave like a very dark, dull blue in mixtures, and yellow plus blue makes green. To darken yellow, use a little violet, raw umber or burnt umber instead.
Should shadows be cool or warm?
It depends on the light. A common guideline is that warm light gives relatively cool shadows and cool light gives relatively warm shadows. Treat it as a starting point and check your subject.
Is it wrong to use black paint?
No. Many great painters use black. It's simply very strong and easy to overuse. If your shadows look dull or grey, try one of the colored alternatives.
What color should a shadow on a yellow object be?
A darker, slightly duller yellow, usually made by adding a little violet (yellow's complement) or raw umber. Black turns yellow greenish, so it's the one darkener to avoid here. In a painting the cast shadow next to the object can lean further toward violet or blue.
How do you shade with acrylic paint?
Mix a shadow version of your base color by adding a small amount of its complement, ultramarine or burnt umber, then a mid-tone between the two. Paint the shadow side, then blend the mid-tone into the edge while the paint is still wet. Acrylics dry fast, so work in small areas or use a slow-drying medium.