Sparrow's Eye Color Chart 2025 Edition

An informational graphic titled "Sparrow's Eye Color Chart 2025 Edition", showing a wide variety of cat eye colors. Darker colors are at the top and lighter colors are at the bottom, with the left edge being more yellow/orange and the right being more blue/green. The box at the bottom shows examples of different types of heterochromia.

As I have been promising for years, the eye color chart is all cleaned up and ready to be shared! I'm totally ok with this being saved and passed around, that's why all my info is on it.

Basic image description is in alt, and a full transcript of all text in the image is under the cut.

This model has been in a process of expansion and tweaking for a very long time. Huge huge thanks to all the folks who contributed and hunted down photos, helped me name all the colors, and gave the final proofs!

Sparrow's Eye Color Chart 2025 Edition

Eye colors in cats are difficult to model because they vary to a significant extent on two axes. This is my best attempt at a general model of cat eye color based on observation and research into how eye color works across species.

Pigmentation refers to the amount of pigment in the colored layer of the iris. Higher pigmentation causes darker colors.

Refraction means the extent to which light is scattered in the structures of the iris. Higher refraction causes deeper blues or greens.

Eye colors are related to coat color, but not as closely as breed standards might have you believe! Most coat colors can have most eye colors outside of purebred lines selected to meet breed standard.

What Color Are My Cat's Eyes?

Color names are descriptive of the actual color of the cat's eyes - I chose them all to sound nice so that breeders can use them if desired. Note that breed standards have a much broader use of color names - "Amber", for example, may include much of the golden to orange range.

Colors are based on pictures of cats in full white light (such as midday sun fully illuminating the eye), and tweaked to look good on properly color-calibrated screens. Always determine eye colors based on how they look in full light.

Main Block

standard eye colors possible with most pelts

Every cat is assumed to have genes that specify some genetic eye color in the main block, but certain other alleles can depigment the eyes partially or completely, creating the lower block.

Pigmentation and Refraction are modeled here as dependent on multiple genes, which seems to best fit the wide spectrum of possibilities in cats. The actual number of genes is unknown and could be very many, but for simplicity they are shown here on a scale from 1-7.

In theory, the genetic eye colors of the offspring should tend to fall somewhere between the genetic eye colors of the parents. Then, any depigmentation factors are applied, which may result in an actual eye color somewhere below the genetic eye color.

Lower Block

occur with phenotypes which cause depigmentation of the iris.

Gray-blues: Fairly rare coloration. The cause of gray eyes in humans is not well understood, but one theory is that collagen or very small amounts of pigment in the eye alter the scattering of light.

Blues: Most common depigmented colors. Can be caused by white spotting/dominant white, colorpoint, and sometimes mocha. There are also multiple Dominant Blue-eye (DBE) mutations known which cause blue eyes as the main effect.

Albinistic: Caused by complete albinism, which also fully depigments the back layer of the iris meant to keep light from getting through. This allows the red color from the retinal blood vessels to bleed through, and also causes poor visual acuity.

Following is a list of all eye colors shown on the main diagram. Rows are pigmentation levels starting from the highest pigmentation, refraction increases from left to right.

Main Block: Copper, Chestnut, Umber, Walnut, Earthen, Olive, Moss; Ochre, Caramel, Bronze, Serpentine, Artichoke, Fern, Forest; Orange, Amber, Brass, Peridot, Avocado, Clover, Malachite; Saffron, Butterscotch, Shrub, Spring, Jade, Pine, Emerald; Gold, Citron, Pear, Lime, Mantis, Grass, Viridian; Yellow, Chartreuse, Sprout, Laurel, Mint, Turquoise, Teal; Canary, Chiffon, Honeydew, Sage, Celadon, Aqua, Cerulean.

Lower Block: Gray-blues: Frost, Opal, Flint, Storm, Steel, Slate, Cadet. Blues: Ice, Powder, Celeste, Sky, Azure, Lapis, Cobalt. Albinistic: Pink, Mauve, Lavender, Periwinkle, Cornflower, Royal, Indigo.

Combo Colors

Cats can exhibit a few different heterochromia types, most commonly a blue with a non-blue. The other most common cause for heterochromia appears to be localized hyperpigmentation, which can be caused by damage to the eye. It can also happen simply due to differing iris structure or unusual pigment migration within the iris.

It is also relatively common for the center of the eye to be a slightly different color, without being marked enough to constitute full heterochromia. My provisionary term for this is "dual-toned". The boundary between this and "true" central heterochromia is somewhat subjective.

For any form of heterochromia or dual-toned eyes, my recommendation for describing them is to note both colors with a slash. For dual-tones, I generally write the outer color before the center one.

Complete Heterochromia Blue/non-blue is commonly caused by white spotting/dominant white, other combos are rare.

Sectoral Heterochromia Blue/non-blue sometimes occurs with white spotting/dominant white. Can also be from hyperpigmentation.

Central Heterochromia Can occur due to hyperpigmentation, uneven pigment distribution, or iris structure. More common in certain breeds.

Dual-toned Irises Relatively small differences in central eye color are common in cats.

Iris Atrophy Iris atrophy due to old age can cause a distinctive lighter ring in the center of the iris.

All writing, art, and chart design ©Sparrow Hartmann 2025

Icon designs are released to the Creative Commons under a CC-BY-SA license and will be made available for download.

Go to sparrows-garden.com for more genetics resources!

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1 month ago

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2 months ago

Writing Notes: Children's Dialogue

Language is extremely complex, yet children already know most of the grammar of their native language(s) before they are 5 years old.

BABBLING

Babbling begins at about 6 months and is considered the earliest stage of language acquisition

By 1 year babbles are composed only of the phonemes used in the language(s) they hear

Deaf babies babble with their hands like hearing babies babble using sounds

FIRST WORDS

After the age of one, children figure out that sounds are related to meanings and start to produce their first words

Usually children go through a holophrastic stage, where their one-word utterances may convey more meaning

Example: "Up" is used to indicate something in the sky or to mean “pick me up”

Most common first words (among the first 10 words uttered in many languages): “mommy,” “daddy,” “woof woof,” “no,” “bye,” “hi,” “yes,” “vroom,” “ball” and “banana”

WORD MEANINGS

When learning words, children often overextend a word’s meaning

Example: Using the word dog to refer to any furry, four-legged animal (overextensions tend to be based on shape, size, or texture, but never color)

They may also underextend a word’s meaning

Example: Using the word dog to refer only to the family pet, as if dog were a proper noun

The Whole Object Principle: When a child learns a new word, (s)he is likely to interpret the word to refer to a whole object rather than one of its parts

SYNTAX

At about two years of age, children start to put words together to form two-word utterances

The intonation contour extends over the two words as a unit, and the two-word utterances can convey a range of meanings:

Example: "mommy sock" = subject + object or possessive

NOTE: Chronological age is NOT a good measure of linguistic development due to individual differences, so instead linguists use the child’s mean length of utterance (MLU) to measure development

The telegraphic stage describes a phase when children tend to omit function morphemes such as articles, subject pronouns, auxiliaries, and verbal inflection

Examples: "He play little tune" or "Andrew want that"

Between 2;6 and 3;6 a language explosion occurs and children undergo rapid development

By the age of 3, most children consistently use function morphemes and can produce complex syntactic structures:

Examples: "He was stuck and I got him out" / "It’s too early for us to eat"

After 3;6 children can produce wh-questions, and relative pronouns

Sometime after 4;0 children have acquired most of the adult syntactic competence

PRAGMATICS

Deixis: Children often have problems with the shifting reference of pronouns

Children may refer to themselves as "you"

Problems with the context-dependent nature of deictic words: Children often assume the hearer knows who s/he is talking about

AUXILIARIES

In the telegraphic stage, children often omit auxiliaries from their speech but can form questions (with rising intonation) and negative sentences

Examples: "I ride train?" / "I not like this book"

As children acquire auxiliaries in questions and negative sentences, they generally use them correctly

SIGNED LANGUAGES

Deaf babies acquire sign language in the same way that hearing babies acquire spoken language: babbling, holophrastic stage, telegraphic stage

When deaf babies are not exposed to sign language, they will create their own signs, complete with systematic rules

IMITATION, REINFORCEMENT, ANALOGY

Children do imitate the speech heard around them to a certain extent, but language acquisition goes beyond imitation

Children produce utterances that they never hear from adults around them, such as "holded" or "tooths"

Children cannot imitate adults fully while acquiring grammar

Example:

Adult: "Where can I put them?" Child: "Where I can put them?"

Children who develop the ability to speak later in their childhood can understand the language spoken around them even if they cannot imitate it

NOTE: Children May Resist Correction

Example: Cazden (1972) (observation attributed to Jean Berko Gleason) – My teacher holded the baby rabbits and we patted them. – Did you say your teacher held the baby rabbits? – Yes. – What did you say she did? – She holded the baby rabbits and we patted them. – Did you say she held them tightly? – No, she holded them loosely.

Another theory asserts that children hear a sentence and then use it as a model to form other sentences by analogy

But while analogy may work in some situations, certainly not in all situations:

– I painted a red barn. – I painted a barn red. – I saw a red barn. – I saw a barn red.

Children never make mistakes of this kind based on analogy which shows that they understand structure dependency at a very young age

BIRTH ORDER

Children’s birth order may affect their speech.

Firstborns often speak earlier than later-born children, most likely because they get more one-on-one attention from parents.

They favor different words than their siblings. 

Whereas firstborns gabble on about animals and favorite colors, the rest of the pack cut to the chase with “brother,” “sister,” “hate” and such treats as “candy,” “popsicles” and “donuts.” 

The social dynamics of siblings, it would appear, prime their vocabularies for a reality different than the firstborns’ idyllic world of sheep, owls, the green of the earth and the blue of the sky.

MOTHER'S LEVEL OF EDUCATION

Children may adopt vocabulary quite differently depending on their mother’s level of education.

In American English, among the words disproportionately favored by the children of mothers who have not completed secondary education are: “so,” “walker,” “gum,” “candy,” “each,” “could,” “wish,” “but,” “penny” and “be” (ordered starting with the highest frequency).

The words favored by the children of mothers in the “college and above” category are: “sheep,” “giraffe,” “cockadoodledoo,” “quack quack,” the babysitter’s name, “gentle,” “owl,” “zebra,” “play dough” and “mittens.” 

BOYS / GIRLS

One area of remarkable consistency across language groups is the degree to which the language of children is gendered.

The words more likely to be used by American girls than by boys are: “dress,” “vagina,” “tights,” “doll,” “necklace,” “pretty,” “underpants,” “purse,” “girl” and “sweater.”

Whereas those favored by boys are “penis,” “vroom,” “tractor,” “truck,” “hammer,” “bat,” “dump,” “firetruck,” “police” and “motorcycle.”

Tips for Writing Children's Dialogue (compiled from various sources cited below):

Milestones - The dialogue you write should be consistent with the child's developmental milestones for their age. Of course, other factors should be considered such as if the child has any speech or intellectual difficulties. Also note that developmental milestones are not set in stone and each child is unique in their own way.

Too "Cutesy" - If your child characters are going to be cute, they must be cute naturally through the force of their personality, not because the entire purpose of their existence is to be adorable.

Too Wise - It’s true kids have the benefit of seeing some situations a little more objectively than adults. But when they start calmly and unwittingly spouting all the answers, the results often seem more clichéd and convenient than impressive or ironic.

Unintelligent - Don’t confuse a child’s lack of experience with lack of intelligence. 

Baby Talk - Don’t make a habit of letting them misuse words. Children are more intelligent than most people think.

Unique Individuals - Adults often tend to lump all children into a single category: cute, small, loud, and occasionally annoying. Look beyond the stereotype.

Personal Goals - The single ingredient that transforms someone from a static character to a dynamic character is a goal. It can be easy to forget kids also have goals. Kids are arguably even more defined by their goals than are adults. Kids want something every waking minute. Their entire existence is wrapped up in wanting something and figuring out how to get it.

Don't Forget your Character IS a Child - Most of the pitfalls in how to write child characters have to do with making them too simplistic and childish. But don’t fall into the opposite trap either: don’t create child characters who are essentially adults in little bodies.

Your Personal Observation - To write dialogue that truly sounds like it could come from a child, start by being an attentive listener. Spend time around children and observe how they interact with their peers and adults. You can also study other pieces of media that show/write about children's behaviour (e.g., documentaries, films, TV shows, even other written works like novels and scripts).

Context - The context in which children speak is crucial to creating realistic dialogue. Consider their environment, who they're speaking to, and what's happening around them. Dialogue can change drastically depending on whether a child is talking to a friend, a parent, or a teacher. Additionally, children's language can be influenced by their cultural background, family dynamics, and personal experiences. Make sure the context informs the dialogue, lending credibility to your characters' voices.

Sources and other related articles: 1 2 3 4 5 6 7 8 9 10

Writing Notes: On Children Writing Notes: Childhood Bilingualism


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2 months ago

Where do you find references for some of the poses you drew for some of the designs? For examples of what I'm talking about, I mostly mean the fighting, cleaning, holding prey, and running poses.

heres a few blogs/sites that i use for poses , design inspiration , and just trying to stylize different breeds. otherwise i watch youtube videos or just google specific poses like 'cat with bird' or somethin sometimes to get inspo

(under the cut)

Warren Photographic Images
Warren Photographic
Photos by Warren Photographic
89cats
ZoranPhoto - Professional, Photographer | DeviantArt
zoranphoto.deviantart.com
Check out ZoranPhoto's art on DeviantArt. Browse the user profile and get inspired.
sobi.org
mostlycatsmostly

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sipurrim - ✧𝐒𝐈𝐏𝐔𝐑𝐈𝐌✧
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