A four-tube earth palette for watercolour portraits
Watercolour portraits fail for one reason more than any other: the painter tries to blend. This palette is built so that blending is unnecessary — four tubes produce every skin value from highlight to shadow, and each plane is a single flat wash that is laid and left alone.
Ochre — Warm opaque earth, the mixing neutraliser.
| Pigment | Parts | Hex |
|---|---|---|
| Yellow Ochre | 3 : 8 (38%) | #C99442 |
| Cadmium Red Light | 2 : 8 (25%) | #D9553F |
| Burnt Umber | 2 : 8 (25%) | #6B4A34 |
| Cobalt Blue | 1 : 8 (13%) | #3B6FA8 |
Mixing notes
| Forehead in light The lightest tone in a portrait. Almost no pigment; skin in light is a value, not a colour. | 3 ochre + 1 cadmium red light, at 18% load | #E0B38A |
| Cheek plane The transition. In watercolour this is where the wash is laid and left alone; blending here flattens the head. | 2 ochre + 2 cadmium red + 1 burnt umber | #C98A6A |
| Core shadow Half a part of cobalt is the difference between a shadow and a bruise. Weigh it, do not guess. | 2 burnt umber + 1 ochre + half a part cobalt | #8A5A4A |
| Reflected light The core shadow diluted is almost always the right reflected light — same hue, higher value. | 1 core shadow + 2 ochre at 10% load | #B98B72 |
| Hair and dark cloth Never black. A portrait with black hair reads as a photograph of a wig. | 3 burnt umber + 1 ochre + 1 cobalt | #3E3229 |
- Mix five values of the same skin family in a row, from the lightest to the darkest, and paint them as a strip on the actual portrait paper.
- Squint at the strip. If the middle three read as one tone, your value spacing is too narrow — widen the darkest end.
- Paint a head from a photograph of a plain plaster cast first, then repeat with a photograph of a face. The cast teaches value; the face introduces colour.
- Lay each plane with one wash and stop. Watercolour does not blend; the transition must be built from the shape of the wash.
- Add reflected light after the core shadow is dry. Adding it while wet produces a washed-out shadow.
- Check the portrait in a mirror. Reversing the image makes a value error obvious in a way that direct viewing does not.
- Do not use a second red. One red, one ochre, one umber and one blue is the whole palette; anything else is a distraction.
Why watercolour cannot blend
Oil and acrylic painters can work a transition between two values for several minutes. In watercolour the sizing closes the surface, and any brush that re-enters a drying wash lifts pigment and leaves a streak. The transition has to be built by placing a differently-valued shape next to the previous one and letting the eye do the merging.
This is the same principle as a printed halftone: no dot blends into its neighbour, yet the image reads as continuous. Four well-spaced values in a portrait will read as a smooth head from a metre away.
One red, and why
cadmium red light is a warm, semi-opaque, high-chroma red that mixes with yellow ochre into a believable mid-tone skin without any adjustment. Adding a second red (usually alizarin, for 'life') is the standard mistake: it introduces a cool red that greys the warm one and produces the waxy, artificial look that amateur watercolour portraits have.
If the face genuinely needs more warmth, add ochre. If it needs more chroma, add cadmium red. Neither of those is a new tube.
The reflected light shortcut
Reflected light is the most over-thought part of portrait painting. In practice it is almost always the core shadow at a higher value and the same hue. Mix a fresh puddle of core shadow, add two parts clean water, and you have it.
Adding it while the core shadow is still wet is the common error: the fresh water lifts the shadow pigment and the shadow comes out lighter and flatter than intended. Wait for the core shadow to be touch-dry.
What matters
- Build transitions from adjacent flat washes, not by blending — watercolour cannot blend.
- Four values with wide spacing read as a smooth head from a metre away.
- One red only: a second, cooler red greys the warm one and gives the waxy amateur look.
- Reflected light is the core shadow diluted; add it only after the shadow is touch-dry.
Handling note — Technique notes only. This is a technical colour-mixing reference, not instruction on depicting any living person; cadmium pigments are heavy-metal compounds — follow the manufacturer's safety data sheet.