COLOR EXPERIMENTS · LEARN BY TESTING

Color mixing experiments you can do in one sitting

Each experiment asks one question, takes 10 to 20 minutes plus drying, and uses paints most painters already have. Make a prediction first, run the test, then compare your result with the explanation.

Mixora editorial exercisesUpdated October 20, 2026Results vary with brand, pigment and surface

EXPERIMENT 01 · PERCEPTION · 15 MIN + DRYING

Same mix, two grounds

Is your mix muddy, or is its background making it look that way?

Goal

See how much the surrounding color changes the same dried paint.

You need

One muted mix, such as a warm gray or khaki
Black, white, and one saturated color
Scrap paper or card
Scissors

Steps

0 of 5 steps done

Paint three squares of card: one black, one white, one saturated color. Let them dry.
Paint a strip of your muted mix on a separate card, let it dry, then cut it into three small chips.
Place one chip in the center of each square.
Look at the three chips from arm's length and write one word for each.
Swap the chips around to confirm they are identical paint.

Predict first: Before you look: will the chip on black look lighter or darker than the chip on white?

Most people see the chip on black as lighter and cleaner, the chip on white as darker and duller, and the chip on the saturated square as shifted toward the opposite hue. The paint did not change; its context did. This is simultaneous contrast.

Takeaway: Before remixing a 'muddy' color, test it against its real neighbors. Sometimes the neighbor is the thing to change.

Continue with: Simultaneous contrast · Why paint mixes turn muddy · Fix: right alone, wrong in the painting

EXPERIMENT 02 · MATERIAL · 10 MIN + DRYING

Wet-to-dry shift

How far does your paint move between wet and dry?

Goal

Measure the drying shift of your own paints so you can mix to compensate.

You need

Two or three paints you use often
The surface you normally paint on
A palette knife or brush
A phone camera with fixed exposure, optional

Watercolor: paint both halves on the same paper with the same dilution, and let the paper dry completely before comparing.

Steps

0 of 5 steps done

Mix one mid-value color with a measured ratio and paint a swatch at your normal thickness.
Keep the rest of the pile wet (cover it), or write down the ratio so you can remix it exactly.
When the swatch is fully dry, paint a fresh stripe of the same wet mix across half of it.
Compare the dry half and the wet stripe side by side under the same light.
Record which direction it moved: darker, lighter, duller, glossier, or more matte.

Predict first: Will your acrylic or gouache swatch dry lighter or darker than the wet stripe?

Acrylic usually dries slightly darker because its binder turns from milky to clear. Watercolor washes usually dry lighter. Gouache dries matte and its shift depends on pigment and binder: dark colors often dry lighter, while some light colors dry slightly darker. Oil changes little in value but can sink in and look duller until varnished.

Takeaway: Correct on dried chips, and when you know the shift, mix slightly in the opposite direction.

Continue with: Drying Shift Tracker · Acrylic color mixing guide · Fix: changed as it dried

EXPERIMENT 03 · VALUE · 15 MIN

Tint strength race

Why does one drop of a blue overpower a whole pile of white?

Goal

Compare how strongly two paints of similar hue tint white.

You need

Two blues, ideally phthalo blue and ultramarine
Titanium white
A small measuring unit, such as a pea-size dab or a drop

Watercolor: skip the white. Dilute one brush load of each blue in the same amount of water and paint both on the same paper; the stronger paint gives the darker wash.

Steps

0 of 5 steps done

Put ten equal units of white in two separate piles.
Add one unit of the first blue to the first pile and mix fully. Swatch it.
Add one unit of the second blue to the second pile and mix fully. Swatch it.
Keep adding single units of the weaker blue until the two swatches match in value.
Write down how many units it took.

Predict first: Will one unit of each blue produce the same light blue?

Usually not. Phthalo blue has a much higher tint strength than ultramarine, so the phthalo pile is darker and more intense with the same amount of paint. Equal parts of two paints do not contribute equally to a mix.

Takeaway: Add strong paints last and in tiny amounts, and read recipes in terms of the paints they name.

Continue with: Opacity and tint strength explained · Tint strength · Fix: too dark

EXPERIMENT 04 · CHROMA · 20 MIN

Complement ladder vs black

What is the difference between dulling a color with its complement and with black?

Goal

Build two five-step ladders and compare how the color loses saturation.

You need

One bright color, such as an orange
Its near-complement, such as an ultramarine or cerulean blue
Black
A strip of paper divided into ten boxes

Steps

0 of 5 steps done

Paint the pure color in the first box of both rows.
Top row: add a very small amount of the complement, mix, and paint the next box. Repeat for five steps.
Bottom row: do the same with black instead of the complement.
Photograph both rows in grayscale to compare value separately from color.
Note where each row stops looking like the original hue.

Predict first: Which row will keep the feeling of the original color for longer?

The complement row usually moves through warm, natural-looking neutrals and keeps a recognizable hue for several steps. The black row typically drops in value faster and can shift hue, for example oranges turn brownish-olive.

Takeaway: To make a color more natural, neutralize with a near-complement or an earth color in small steps. Save black for when you want a darker value.

Continue with: Complement Finder · Complementary colors · Value Scale Generator · Fix: too bright or saturated

EXPERIMENT 05 · HUE · 15 MIN

Two greens from two blues

Why do some blue-and-yellow mixes give a clean green and others an olive?

Goal

See how the hidden bias of each primary decides the quality of a secondary color.

You need

Phthalo blue (green shade) or another green-leaning blue
Ultramarine blue
Lemon yellow
A warm yellow, such as cadmium yellow medium or yellow ochre

Steps

0 of 5 steps done

Mix equal amounts of phthalo blue and lemon yellow. Swatch it.
Mix equal amounts of ultramarine and the warm yellow. Swatch it.
Try the two crossover pairs as well.
Arrange all four greens from cleanest to dullest.
Write which paints were in the cleanest and dullest mixes.

Predict first: Which pair will make the most vivid green?

Typically the green-leaning blue with the green-leaning yellow gives the cleanest green, while violet-leaning ultramarine with an orange-leaning yellow gives a duller olive. The duller pair carries a little red between them, which partly neutralizes the green.

Takeaway: Choose primaries by bias. Clean secondaries come from paints that lean toward each other; muted ones from paints that lean away.

Continue with: Warm vs cool primary colors · Emerald green recipe · Olive green recipe · Landscape paint palette

EXPERIMENT 06 · HUE · 15 MIN

Reveal the hidden color in black

Is your mixed black really neutral?

Goal

Use a white tint to expose the undertone of a mixed dark and correct it on purpose.

You need

Ultramarine blue
Burnt umber
Titanium white

Watercolor: instead of white, dilute a little of the dark with plenty of water. The pale wash reveals the bias the same way.

Steps

0 of 5 steps done

Mix equal parts ultramarine and burnt umber. It should look nearly black.
Take a small amount and mix it with about five times as much white.
Look at the gray: does it lean blue or brown?
Add a little of the opposite paint to the dark pile and tint it again.
Stop when the tint reads as a neutral gray, or keep a deliberate warm and cool version.

Predict first: Will the equal-parts mix tint to a neutral gray?

Often it leans one way, because the two paints rarely have equal tint strength. The white tint makes a bias visible that the dark mass hides. You can then keep a neutral black or bias it warm or cool for different shadows.

Takeaway: Always test a dark in a tint before using it across a painting.

Continue with: How to mix black without black · Chromatic black recipe · Charcoal recipe · Portrait paint palette

KEEP IT A FAIR TEST

How to get a result you can trust

Change one thing per swatch and write the ratio next to it.
Use the same surface, thickness and light for every comparison.
Judge dried paint, not the wet pile.
Expect your result to differ from the explanation sometimes. Brand, pigment and medium all change the outcome, and that difference is useful information.

Teaching a group? The paint mixing lesson plan and printable worksheet turn these tests into a 50-minute class. When a mix goes wrong during a test, the paint mix troubleshooter suggests the next correction.