Earth Pigments: Ochre, Umber and Sienna

Earth pigments are the colours dug up and cooked rather than invented in a bright modern reaction. Yellow ochre, raw sienna, burnt sienna, raw umber and burnt umber cover a huge part of rooms, landscapes, skin and quiet greys. They are easy to underestimate because they are not spectacular on a colour chart. In mixtures they often behave better than the spectacular tubes.

What the names are telling you

Yellow ochre is a muted yellow, usually more opaque than a clear modern yellow, and it granulates in watercolour. Raw sienna is a yellower, often more transparent earth. Burnt sienna is that earth heated until it reddens. It is one of the most useful colours in a box: warm, strong enough to draw with, and a fine partner for blue. Raw umber is a greenish or neutral brown, handy for cooling a warmth without reaching for black. Burnt umber is darker and redder, and it can dominate a mixture if you let it.

These are families, not identical products. One maker's raw umber is greener than another's. Test a thin wash and a thick touch of each earth you own, and write the result down. The name on the label is a starting point. The swatch is the fact.

Mixes worth knowing by heart

Burnt sienna with ultramarine makes a range of greys and near-blacks that still feel like colour. Lean towards the sienna and the grey warms. Lean towards the blue and it cools. That range will paint shadow, bark, iron and the dark of a navy cloth without a black tube. Mixing Natural Greys sits next to this idea. Earth plus a strong blue is simply one reliable way to arrive there.

Yellow ochre with a little red earth makes the grounded yellows of stone, bread and winter grass. Ochre with a cool blue makes subdued greens that sit back, which is what distance often needs. A bright green from lemon and phthalo can come forward even when you meant it to recede. An earth green rarely makes that mistake. The Story of Ultramarine is the history of the blue in these mixes. You only need the practical half today: it granulates and it leans violet, so the greys it makes with sienna are lively rather than flat.

Opacity, staining and too much of a good thing

Ochres and umbers can be surprisingly opaque. In watercolour they cover a drawing quickly and, if you pile them on, they turn muddy and lifeless. Use them thinner than you think, then darken with a second layer once the first is dry. In oil they make a good lean underpainting because many of them dry readily. Underpainting: A Quiet Start for Stronger Oils is easier to keep lean when the first colour is an earth rather than a slow, greasy black.

Burnt umber is the one to ration. It is dark enough to stand in for observation, and then every shadow in the picture is the same brown. Mix it, do not pour it. If the passage could be a grey made from sienna and blue instead, it will usually belong to the rest of the painting more convincingly.

A corner of the palette for earths

Give the earths their own patch, away from the bright yellows. A brush that has touched ochre will silence a clean lemon, and you will not see it until the mixture dries duller than you mixed it. For a week, paint small studies using only earths plus one blue. Rooms, boots, loaves, a wooden chair. The limit shows you how far these colours go, which is farther than their modesty suggests.

When you return the bright tubes to the palette, keep one earth in play as the quieter parent. A picture of saturated colour with no earth in it can look unmoored. A picture of earth with one clean accent usually looks considered.

Frequently asked questions

Are earth pigments safer or more natural? Natural origin is not a safety claim. Handle all paints with ordinary care, and follow the label, especially with older formulae. The reason to use earths is their colour and their behaviour, not a story about purity.

Can I replace burnt sienna with a mixed orange? You can approximate the hue. You will not automatically get the same transparency, drying or granulation. If a mixture depends on those, the earth itself is doing work a bright orange will not do.

Do earths work in design as well as painting? Yes. Ochre, sienna and a near-black mixed from brown and blue make a calm palette for a page or a poster. They ask for strong contrast of size and weight, because the hues themselves will not shout.