Cool split-primary: a landscape palette built on three cool pigments
Most landscape palettes are warm-heavy because warm greens are easy to mix and easy to like. This one goes the other way: cerulean, lemon yellow and permanent rose are all on the cool side, and the result is a set of greens that read as distance rather than as a hedge in the foreground.
Cerulean — Heavy, coarse particle, strong granulation.
| Pigment | Parts | Hex |
|---|---|---|
| Cerulean Blue Chromium | 3 : 10 (30%) | #4E93B8 |
| Lemon Yellow | 3 : 10 (30%) | #E4CE4E |
| Permanent Rose | 3 : 10 (30%) | #C2537A |
| Payne's Grey | 1 : 10 (10%) | #3E4A57 |
Mixing notes
| Spring foliage Stays bright because both pigments are cool. Adding rose at 1 part gives the shadow side of the same leaf. | 3 lemon yellow + 2 cerulean | #8FAE52 |
| Distance haze One part rose per twelve parts weak cerulean produces the pink-grey that real distance has. | cerulean at 12% + 1 part rose | #A9BCC6 |
| Rain cloud The grey is a shifter, not a colour. More than one part and the cloud loses its violet cast. | 3 cerulean + 2 rose + 1 Payne's grey | #5E6E80 |
| Warm stone A cool palette can still produce warm neutrals; this one carries a wall in sunlight. | 2 lemon yellow + 2 rose + 3 cerulean | #9C9184 |
- Lay out cerulean, lemon yellow and permanent rose in three separate wells. Leave the Payne's grey in a fourth, well away from the yellow.
- Mix the six greens first, from 5 : 1 yellow-to-blue down to 1 : 3, and paint them as a strip.
- Add one part rose to each green in a second strip directly below. The value difference should be about one step.
- Mix the three cloud greys with the Payne's grey and paint them as a third strip.
- Check the whole sheet from two metres away. If the greens and the greys read as the same colour, your blue is too strong.
- Note the three ratios you would actually use in a landscape: foliage, distance and cloud.
- Keep the sheet as a reference. Cerulean granulates, and the granulation pattern is half the reason for choosing it.
What a split primary actually buys you
A split primary uses two versions of each primary — one warm, one cool — so that you can choose which way a secondary leans. Here the blue is cerulean, which is on the cool side but not as cold as phthalo; the yellow is lemon, which is a cool yellow with a green cast; the red is permanent rose, a cool transparent red.
The consequence is that every secondary leans cool. Greens read as distance. Violets read as shadow. Oranges are almost impossible, which is the deliberate limitation: if you need a warm orange in a cool landscape, it is a focal point and should be added as a separate tube.
Cerulean granulation is a feature
Cerulean's particle size is unusually large, so it settles into the paper's tooth and produces visible speckle even at full dilution. In a distance wash that speckle reads as atmospheric scattering — the effect real painters chase with scumbling, achieved here by doing nothing except choosing the right blue.
The granulation is destroyed by over-mixing. Stir cerulean with a palette knife twice and stop; a brush whisked through it twenty times breaks the particles down and you lose the speckle.
Where the Payne's grey belongs
Payne's grey is a mixture — typically ultramarine, ivory black and a little ochre — and it is the only non-primary on this palette. It exists here for one job: pulling a violet cloud toward neutral without dropping its value further.
One part in six is the working maximum. Beyond that the cloud stops being a violet-grey and becomes a flat storm grey, which is a different painting.
What matters
- Split primary with a cool blue, cool yellow and cool red: every secondary leans cool.
- Cerulean granulation produces distance haze for free — over-mixing destroys it.
- Stir cerulean a maximum of twice with a palette knife.
- Payne's grey at one part in six maximum; it is a shifter, not a colour.
Handling note — Technique notes only. Follow the manufacturer's safety data sheet for pigment handling and studio ventilation.