41 colour terms from 16 languages, each described from research on that language’s own categories and then related to the English word a dictionary would give. For 23 of them a one-word English translation loses or adds something, and the entry says what.
There are no swatches here on purpose. The evidence for these terms is naming data, dictionary senses and corpus counts, not screen values, so each term’s range is given in words. “Splits” and “merges” describe the view from English; a speaker of the language is not splitting or merging anything.
The blue area is divided by lightness into two everyday words, neither of which is a kind of the other. A speaker has to choose one.
Basic colour terms: Twelve in most accounts, with two blues; Berlin and Kay (1969) already named Russian as a possible exception to their limit of eleven.
The darker blues.
Translation caution. Rendering it as plain 'blue' is correct but drops a distinction Russian makes obligatory; a light blue is not siniy.
English landmarks: blue, navy.
The lighter blues.
Translation caution. Not a kind of siniy and not interchangeable with it. 'Sky blue' is the nearest English secondary term, but in English that is a shade of blue; in Russian goluboy stands beside siniy as an equal.
English landmarks: sky blue, blue.
Two blue terms separated mainly by lightness. The division resembles the Russian and Turkish ones, but the best examples of the terms differ between the three languages.
Basic colour terms: Twelve including two blues, according to text counts and four naming studies (Androulaki and colleagues 2006).
The darker blues.
Translation caution. Its best example is not the same as that of Russian siniy or Turkish lacivert, so the three 'dark blues' cannot be treated as translations of one another.
English landmarks: blue, navy. The cited study publishes focal colours for this term; Colourwise does not reproduce them.
The lighter blues.
Translation caution. Thierry and colleagues (2009) found Greek speakers' brain responses distinguished the two blues more strongly than English speakers' did; that is a measured difference in automatic processing, not evidence that English speakers cannot see the difference.
English landmarks: sky blue, blue. The cited study publishes focal colours for this term; Colourwise does not reproduce them.
Naming data from Verona, Alghero (Sardinia) and Tuscany
The blue area is divided by lightness into two or three terms, and which term takes the light end depends on where the speaker is from.
Basic colour terms: Twelve with two blues in a study of standard Italian (Paggetti and colleagues 2016); three basic blues argued for Tuscan speakers (Del Viva and colleagues 2022).
Dark blue.
Translation caution. English 'blue' is wider. A mid or light blue translated into Italian as blu will read as too dark a word.
English landmarks: blue, navy. The cited study publishes focal colours for this term; Colourwise does not reproduce them.
Light to medium blue; how light depends on the region.
Translation caution. The English cognate 'azure' is a literary word for a bright sky colour and is not an everyday equivalent.
English landmarks: sky blue, blue. The cited study publishes focal colours for this term; Colourwise does not reproduce them.
Light blue; literally 'of the sky'.
Translation caution. Whether it is basic, and how much of the light-blue range it takes from azzurro, depends on the region. A national audience will not read it uniformly.
English landmarks: sky blue. The cited study publishes focal colours for this term; Colourwise does not reproduce them.
A general blue term plus a salient dark-blue term that speakers use consistently and still classify under the general one.
Basic colour terms: Eleven or twelve. Özgen and Davies (1998) found twelve on salience and consensus but judged eleven the safest conclusion, because most speakers treat the twelfth as a kind of blue.
Blue.
English landmarks: blue. The cited study publishes focal colours for this term; Colourwise does not reproduce them.
Dark blue.
Translation caution. Unlike Russian siniy it is, for most speakers, a kind of blue. It is the nearest thing in this dataset to English 'navy': salient, consistent and still a subdivision.
English landmarks: navy. The cited study publishes focal colours for this term; Colourwise does not reproduce them.
Modern speakers separate green and blue with basic terms, but the blue term is still used for some things English calls green, and a light-blue term has become near-universal within about thirty years.
Basic colour terms: Eleven in a 1987 study of ten observers (Uchikawa and Boynton); a 2017 study of 57 speakers proposes a twelfth, mizu (Kuriki and colleagues). For the eighth-century Man'yōshū one analysis accepts only four terms as basic (Tobioka 2020), revising an earlier proposal that counted more.
Blue; also said of some things English calls green.
Translation caution. Translating ao as 'blue' is wrong for the objects conventionally called ao that are green. The convention is about words; it does not mean speakers see a green light as blue.
English landmarks: blue, green.
Green.
English landmarks: green.
Light blue; the word means 'water'.
Translation caution. English 'light blue' is a compound understood as a kind of blue. For most speakers in the 2017 sample mizu is a category of its own.
English landmarks: sky blue.
Dark blue; the word is glossed 'indigo' in the cited study.
Translation caution. Colourwise links it to 'navy' as the nearest English lexicon term; that link is editorial. The study compared naming categories and did not test English navy against kon.
English landmarks: navy.
Naming data from Taiwan; usage notes for Mainland China, Taiwan and Hong Kong
Green and blue have separate basic terms. An older word covering both survives with different meanings in different regions.
Basic colour terms: Nine in one study (Gao and Sutrop 2014, with no basic brown or orange); eleven in a cluster analysis of speakers in Taiwan (Hsieh and colleagues 2020).
A green-to-blue word whose meaning depends on period and region.
Translation caution. No single English word fits. The right rendering depends on the date and origin of the text and often on the object described; a fixed gloss of 'blue' or 'green' will be wrong in a share of cases.
Blue.
English landmarks: blue.
Green.
English landmarks: green.
What English calls green is divided between a yellow-green term and a green term, with no single everyday word covering both.
Basic colour terms: Not counted in the sources read here; they establish only that yeondu and chorok are distinct basic terms (Hanley 2015).
Yellow-green.
Translation caution. The same research group measured discrimination thresholds and found them no different between Korean and English speakers. The boundary affects speeded judgements, not what can be told apart.
English landmarks: green, chartreuse, lime.
Green, excluding the yellow-greens.
Translation caution. English 'green' is wider. A yellow-green translated as chorok names the wrong category for a Korean reader.
English landmarks: green.
One stem word covers green and blue, and speakers make the distinction with modifiers taken from things: leaf, ocean, sky. Multi-word names do work that single words do in English.
Basic colour terms: Not counted in the sources read here. They describe one basic stem across green and blue (Jameson and Alvarado 2003).
Green and blue together.
Translation caution. A lone xanh cannot be translated without context. The speaker is not being vague: Vietnamese puts the distinction in a modifier where English puts it in the head word.
English landmarks: green, blue, teal. The cited study publishes focal colours for this term; Colourwise does not reproduce them.
Leaf xanh: green.
English landmarks: green.
Ocean xanh: blue.
English landmarks: blue.
The recorded senses of the main cool-colour words overlap: one word runs from blue through the green of grass to slate grey, and the words usually given as 'green' and 'grey' each reach into their neighbours.
Basic colour terms: Not counted in the source read here, a historical dictionary that records senses and does not apply basic-term criteria.
Blue; also the green of grass and leaves, and pale or slate grey.
Translation caution. 'Blue' is the usual modern translation, but in older texts, place names and fixed expressions glas may be green or grey. A historical dictionary shows the range the word has had; it does not show how often each sense is used today.
Green.
English landmarks: green.
Grey; also pale, and russet or brown.
Translation caution. In older texts llwyd may describe something brown or merely pale. 'Grey' is safe for present-day everyday use only.
Three words share the green-to-blue range and are contrasted with each other by the dictionary itself: a light, greyish one between a vivid green and a deep blue.
Basic colour terms: Not counted in the source read here, a historical dictionary that records senses and does not apply basic-term criteria.
The dictionary cited covers Old Irish (sga) and Middle Irish (mga) texts together. Present-day Irish (gle) is not described by these records.
Light green, blue and grey shades.
Translation caution. The English word depends on the thing described: green for foliage, grey for a horse or stone, blue or grey for eyes. The record describes medieval Irish, not present-day usage.
Deep blue; also dark.
Translation caution. In medieval texts gorm may mean dark or black as well as blue, so 'blue' cannot be assumed. The record describes medieval Irish, not present-day usage.
Green, verdant.
English landmarks: green.
Two everyday words are both translated 'red'. The studies read here find one is the general term and the other is tied to a narrower set of things and to figurative use.
Basic colour terms: Eleven according to a field study (Uusküla and Sutrop 2007) and a corpus study (Benczes and Tóth-Czifra 2014); Berlin and Kay (1969) had supposed twelve, with two reds.
Red; the general term.
English landmarks: red.
Red; the term tied to particular things and to figurative use.
Translation caution. Choosing between the two reds is a matter of collocation, which a colour value cannot settle. Ask a native speaker which word goes with the object.
English landmarks: red.
Highlands of western New Guinea
Two terms divide all colours between them: one for cool and dark colours, one for warm and light colours.
Basic colour terms: Two, as reported from Rosch Heider's fieldwork of the early 1970s and cited by later studies.
The studies describe the Dugum Dani of the highlands of western New Guinea. ISO 639-3 divides Grand Valley Dani into three codes (dni, dnt, dna) and the sources read here do not say which applies.
What is disputed
Rosch Heider's finding that Dani speakers remembered focal colours better despite having two terms was long the main evidence for universal categories. Roberson, Davies and Davidoff (2000) repeated the design with Berinmo speakers and found no focal advantage once response bias was controlled. Hardin (1998) notes that the Dani terms did not fit Berlin and Kay's original description of a two-term language as black-plus-dark against white-plus-light, which led to the theory being reworked.
Cool and dark colours.
Translation caution. 'Black' and 'dark' are both poor glosses: the term is defined by coolness as well as darkness. A two-term vocabulary names colours broadly; it is not a report that only two colours are seen.
Warm and light colours.
Translation caution. 'White' and 'light' are both poor glosses: the term takes in saturated warm colours such as red. It did not fit Berlin and Kay's first description of a two-term language, which had to be revised.
Villages near the Sepik River, Papua New Guinea
A boundary English does not have, between nol and wor, runs through what English calls green; English's green-blue boundary falls inside nol.
Basic colour terms: Five (Roberson, Davies and Davidoff 2000).
Registered as Berinomo. Kay and Regier (2007) confirm that the two spellings refer to the same language.
What is disputed
Roberson and colleagues read the Berinmo results as evidence that categories are set by language: speakers showed categorical effects at the nol–wor boundary and not at green–blue. Kay and Regier (2007) accepted that naming differences go with differences in cognition but compared Berinmo's boundaries with the 110 World Color Survey languages and found them typical, arguing that naming still follows universal tendencies. Both readings rest on the same naming data from a small community.
Green, blue and purple together.
Translation caution. No English word covers it, and it is not English green plus English blue: its edge with wor cuts through green. See the language record for the dispute about what the experiments show.
English landmarks: green, blue, purple.
Yellow, orange, brown and yellowish green together.
Translation caution. 'Yellow' leaves out most of what the term covers. A leaf-green sample may be wor where an English speaker expects it to group with the other greens.
English landmarks: yellow, orange, brown, green, olive.
Northern Namibia
Five widely extended terms named 86% of the samples, with further terms specific to the colours of cattle hides. Agreement between speakers was lower than in Berinmo.
Basic colour terms: Five by the study's criteria, one of them a recent borrowing (Roberson and colleagues 2005).
The code is Herero's. The study describes Himba as a dialect of Herero that differs from it in colour vocabulary.
What is disputed
The authors present Himba as evidence that languages with similar-looking category sets still differ in where category effects appear. Kay and Regier (2007) treat Himba, like Berinmo, as a five-term system whose boundaries sit close to those of World Color Survey languages. The published measurements concern naming, similarity judgements and memory; they do not show that speakers are unable to see a difference English names.
Red, broadly.
Translation caution. Which English regions beyond red it reaches is not stated term by term in the text read; the orange and pink landmarks are Colourwise's reading of 'broad', not the study's list.
Beige and yellow, extended widely over light warm and green colours.
Translation caution. Neither 'yellow' nor 'beige' conveys its extent. The study's finding is about where a boundary falls, not about failing to see green.
Dark colours, including black.
Translation caution. 'Black' is the dictionary gloss, not the term's range. It covers dark colours with a hue.
English landmarks: black, navy, green, blue. The cited study publishes focal colours for this term; Colourwise does not reproduce them.
Light colours, including white.
Translation caution. The cream and ivory landmarks are Colourwise's shorthand for 'very light colours with a hue'; the study does not use English secondary names.
English landmarks: white, cream, ivory. The cited study publishes focal colours for this term; Colourwise does not reproduce them.
Blue, green and purple together.
Translation caution. The Herero dictionary's 'blue' is too narrow for Himba usage. A loanword's meaning in the borrowing language cannot be read off the language it came from.
Bolivian Amazon
Agreement between speakers is high for black, white and red and low elsewhere. Two words are used interchangeably across green and blue by most monolingual speakers.
Basic colour terms: No agreed count. Speakers use only a few terms with consensus (white, black and red); other terms vary from person to person (Gibson and colleagues 2017; Malik-Moraleda and colleagues 2023).
What is disputed
Gibson and colleagues explain the low agreement by how little colour is needed to tell familiar natural objects apart: Tsimane' speakers used colour words more for artificially coloured objects. That is the authors' proposed explanation, not a measured cause. They ran two versions of the naming task to check that the low agreement was not produced by the method. The bilinguals whose terms had separated into green and blue all lived in a more industrialised town, so language contact and way of life are not separated in the data.
Green or blue for monolingual speakers; green for bilinguals.
Translation caution. The published gloss '~green' marks the most frequent use, not an equivalence. For a monolingual speaker it may equally be said of a blue thing.
English landmarks: green, blue. The cited study publishes focal colours for this term; Colourwise does not reproduce them.
Blue or green for monolingual speakers; blue for bilinguals.
Translation caution. The published gloss '~blue' marks the most frequent use. Two interchangeable words for one category are not the same as one word, and neither is a separate blue for monolinguals.
English landmarks: blue, green. The cited study publishes focal colours for this term; Colourwise does not reproduce them.
Red.
English landmarks: red. The cited study publishes focal colours for this term; Colourwise does not reproduce them.
Tanzania
Informants were allowed to answer 'don't know', and often did outside black, white and red. The low-agreement terms they did use still grouped colours along the lines found in other languages.
Basic colour terms: Three terms with full agreement — black, white and red — among 55 informants naming 23 samples (Lindsey and colleagues 2015).
What is disputed
The authors read this as an early stage of a colour vocabulary in which categories exist before agreed words for them do. The study is of one community and 23 samples, and no term-level records are given here because the source read does not list the Hadza words.
The source read for this language describes its system but does not list its colour words, so no individual terms are recorded.