Siamese colour points explained — how they develop, what they mean, and how to tell them apart

Ask most people to picture a Siamese cat and they will picture a seal point. But the Siamese colour palette is far wider and more nuanced than the most familiar version — and understanding it not only deepens your appreciation of the breed, but gives you a genuine insight into the genetics behind one of the most distinctive cats in the world.

At The House of Siamese, we breed the colours listed below. It is worth noting that there are many recognised Siamese and Colourpoint colour variations beyond these — what you will find here are simply the colours that we work with.

What exactly is a colour point?

The term colour point refers to a specific coat pattern in which the extremities of the body — the face mask, ears, legs and tail — are darker than the body coat. This is not simply a pattern imposed on the cat from the outside: it is the direct result of a form of temperature-sensitive albinism.

The enzyme responsible for producing pigmentation in Siamese cats is deactivated by heat. The warmest parts of the body — the main body trunk — remain pale or near-white. The cooler extremities, where the blood runs closer to the surface and the skin sits nearer to the outside temperature, develop full pigmentation. This is why point colouration concentrates exactly where it does, and why no two Siamese are quite identical in their depth and distribution of colour.

It is also why Siamese kittens are born almost entirely white. In the warmth of the womb, there is no opportunity for their point colour to develop. Over the first weeks of life, as they encounter cooler air temperatures for the first time, their points begin to emerge — gradually deepening over months and, in many cases, continuing to develop subtly throughout the first year of life.

The four solid colour points

These are the four classic Siamese colours recognised by the GCCF for show purposes, and the colours bred within our Siam-Amor programme.

Seal Point

The most recognised Siamese colouring. Seal points have deep, rich brown — almost black — points against a pale cream to warm fawn body coat. The contrast is dramatic and immediately recognisable. Body coats in seal points tend to darken with age, meaning a seal point kitten and the same cat at three years old can look noticeably different in body tone, though the points themselves remain deep throughout.

Blue Point

Blue is the dilute form of seal — genetically, a blue point carries two copies of the dilution gene. The result is a cool, slate-grey colouration on the points, set against a very pale body coat with a subtle bluish-white tone. Blue points have a softer, more ethereal quality than seal points — the contrast is gentler, and the overall impression is of a cat with an almost silvery elegance. Many people are drawn to blue points precisely because of this quieter, more refined quality.

Chocolate Point

Chocolate points carry warm, milk-chocolate brown colouration on their points, against an ivory to cream body coat. Chocolate is governed by a separate gene to seal — it is not a dilution of seal, but a distinct colour in its own right, which is why producing chocolate points requires specific genetic consideration in a breeding programme. The warmth of the chocolate tone, combined with the pale ivory body, gives chocolate points a particularly inviting, almost caramel quality that is quite distinct from the cooler tones of seal.

Lilac Point

Lilac — sometimes called frost point — is the palest and often considered the rarest of the four classic solid colours. A lilac point is genetically a double dilute: the dilute form of chocolate. The result is soft, pinkish-grey points — sometimes described as dove-grey with a rosy blush — set against a magnolia-white body coat that is among the palest of all Siamese colours. Lilac points have a particularly delicate, refined quality to their appearance. Their colour can be easy to underestimate from a distance, but up close the subtlety and warmth of the lilac tone is quite beautiful.

The tabby point variations

Each of the four solid colour points also has a corresponding tabby point variation — sometimes called lynx point in other countries. Tabby point Siamese carry the tabby gene in addition to the colour point pattern. The result is a cat whose points show visible striping — most noticeable on the legs, face and tail — alongside the characteristic point colouration of their colour class.

In tabby points, the face mask shows distinct tabby markings: an M-shaped marking on the forehead and striped markings around the eyes, which give many tabby point Siamese a slightly more striking, expressive face than their solid-pointed counterparts.

Seal Tabby Point

The tabby version of the seal point. Deep brown-black point colouration with clear tabby striping visible on the legs and tail, and strong facial markings. The base coat between the stripes is often a slightly paler version of the solid seal tone, giving the striping clear definition.

Blue Tabby Point

The tabby version of the blue point. Cool slate-grey striping on a slightly paler background tone. Blue tabby points tend to have a very soft, cool-toned appearance overall — the tabby markings are visible but the overall effect remains gentle and refined rather than high-contrast.

Chocolate Tabby Point

The tabby version of the chocolate point. Warm milk-chocolate striping with a pale ivory ground tone between the stripes. Chocolate tabby points have a particularly appealing warmth to their colouration — the stripe definition is clear, and the contrast between stripe and ground tone can be very striking in good light.

Lilac Tabby Point

The tabby version of the lilac point. The palest of the tabby points — soft pinkish-grey striping on a near-white ground tone, with the characteristic tabby facial markings and leg striping. Lilac tabby points are often described as having an especially ethereal quality: the markings are present and clear, but the overall impression remains soft and very pale.

How genetics influence colour and point intensity

The colour point pattern in Siamese is caused by a gene known as the Himalayan gene (also called cs) — a mutation of the tyrosinase enzyme that creates the temperature-sensitive restriction of pigment. All Siamese cats are homozygous for this gene, meaning they carry two copies of it. This is why the Siamese point pattern is fixed and consistent across the breed.

The colour of the points is then governed by a separate set of genes. The B gene controls whether a cat is black-based (seal) or chocolate-based. The D gene controls whether the colour is expressed fully (seal, chocolate) or in its dilute form (blue, lilac). Both require two copies of the relevant gene to express — which is why two seal point parents who each carry one hidden copy of the dilute gene can produce blue point kittens.

Beyond genetics, point intensity — how dark and defined the points appear — is influenced by several factors:

🐾 Age: Points typically deepen with age, particularly in seal and chocolate. A seal kitten and a five-year-old seal point can look noticeably different in body tone.

🐾 Temperature: Cats who live in cooler environments may develop slightly darker, better-defined points. This is the mechanism in action.

🐾 Health: A cat in excellent condition with good nutrition will typically show cleaner, more defined point colouration.

🐾 Individual variation: Even within the same colour class, two cats can vary in the depth and richness of their points — this is entirely normal and part of what makes each cat unique.

There are many other recognised colour point variations in the wider cat fancy — red, cream, tortie, and various combination colours. At Siam-Amor, we work exclusively within the four solid colours and their corresponding tabby variations described above.

Why are Siamese kittens born white?

Siamese kittens are born white because they develop in the warmth of the womb, where the temperature-sensitive enzyme responsible for pigmentation is deactivated. As the kittens are exposed to cooler air temperatures after birth, their point colouration gradually develops — first becoming visible within a few weeks, and continuing to deepen through the first year of life.

What is the difference between Seal and Chocolate Points?

Seal point and chocolate point are governed by different genes — chocolate is not simply a lighter version of seal. Seal points have deep brown-black points; chocolate points have a warmer, milk-chocolate brown colouration. The body coat tone also differs: seal points tend toward fawn or cream, while chocolate points usually have a paler ivory coat.

What is a Tabby Point Siamese?

A tabby point Siamese carries the tabby gene in addition to the colour point pattern. This results in visible striping on the points — most clearly on the legs, tail and face. Each of the four classic colours has a tabby version: seal tabby, blue tabby, chocolate tabby and lilac tabby point. They are sometimes called lynx points in other countries.

Can two Seal Point parents produce a Blue Point kitten?

Yes, if both parents carry a hidden copy of the dilution gene. Two seal points who each carry one copy of the dilution gene (but do not express it themselves) can produce blue point kittens in their litter. This is why careful genetic record-keeping across generations is important in any colour breeding programme.

Are there other Siamese colour points besides the ones you breed?

Yes. There are many other recognised colour point variations in the wider cat fancy, including red, cream, tortie point and various combination colours. At Siam-Amor we work exclusively with the four classic colours — seal, blue, chocolate and lilac — and their tabby counterparts. Other colour variations are recognised under different registration categories by the GCCF.