chemistry

Payne's grey

Payne's grey is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Payne's grey rather than just read about it. In short: Payne's grey is a dark blue-grey colour used in painting. Originally a mixture of iron blue (Prussian blue), yellow ochre and crimson lake, Payne's grey now is often a mixture of blue (ultramarine, phthalocyanine, or indigo) and black, or of ultramarine and burnt sienna.

Key takeaways

Payne's grey belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Payne's grey to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Payne's grey from memory before moving on to harder problems.

Reference excerpt

Payne's grey is a dark blue-grey colour used in painting. Originally a mixture of iron blue (Prussian blue), yellow ochre and crimson lake, Payne's grey now is often a mixture of blue (ultramarine, phthalocyanine, or indigo) and black, or of ultramarine and burnt sienna. The colour is named after William Payne, who painted watercolours in the late 18th century, who most likely developed the colour while trying to produce a mixer that was less intense than black. Payne's grey was deemed an obsolete term in the early 19th century, but is still used by artists today. The first recorded use of "Payne's grey" as a colour name in English was in 1835. The normalized colour coordinates for Payne's grey are identical to dark electric blue, which was formalized as a colour in the ISCC–NBS system in 1955.

History Payne's grey was created by the watercolourist William Payne in the late 18th century. Little is known about Payne's life, and the origins of the colour are equally as unknown. However, theories suggest that Payne made the colour in the attempts to find a replacement for black when he taught watercolour, since black was the traditional mixer. Many different recipes of Payne's grey have existed due to the fact that the shade is a composite colour. The original mixture was made with Prussian blue, yellow ochre, and crimson lake in the late 18th century. A recipe listed in the 20th century, called for indigo instead of Prussian blue, and now it appears to be made by mixing ultramarine (natural or artificial) with a carbon-based black. Payne's grey was described as an obsolete term for the mixture of black, ultramarine, and ochre in the early 20th century. However, this has been contradicted by other sources that suggest that the name and the colour itself are still commonly used.

Visual Properties

Payne's grey is a dark blue grey that has long been considered similar to another colour of a similar origin called neutral tint. The reason why they are similar is because both colours are made of the same pigments of indigo, ochre, and ivory black in watercolour, but in different proportions. The main difference between the two of them is that Payne's grey has a more lilac shadow, and therefore a warmer tint. Even though Payne's grey has a composition for acrylic paint, which uses a mixture of artificial ultramarine, ochre, and ivory black, its visual properties stay the same.

Permanence Payne's grey does not have significant resistance to light. Over time, the lilac shadow will fade, transforming the colour into a neutral grey.

Notable occurrences

A significant number of William Payne's works include the shade. The shade is primarily used for atmospheric perspective to create the impression of distance. In Payne's work, it was primarily applied to the middle distance to produce the effect.

Worked examples

Example 1 — a first encounter with Payne's grey

Start with the simplest possible case. Write down what Payne's grey claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Payne's grey before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Payne's grey ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Payne's grey

In research: Payne's grey appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Payne's grey in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Payne's grey is common in secondary-school and first-year university syllabi. It links to neighbouring topics Inorganic pigments, Shades of gray, so understanding it makes those chapters shorter.
In everyday life: Look for Payne's grey outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Payne's grey in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Payne's grey means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Payne's grey out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Payne's grey in simple terms?

Why does Payne's grey matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Payne's grey?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Payne's grey.