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chromaticity diagram: meaning, definition, pronunciation and examples

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UK/ˌkrəʊməˈtɪsɪti ˈdaɪəɡræm/US/ˌkroʊməˈtɪsɪti ˈdaɪəɡræm/

Technical/Scientific

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Quick answer

What does “chromaticity diagram” mean?

A two-dimensional graphical representation of colours, showing their chromaticity coordinates while excluding brightness information.

Audio

Pronunciation

Definition

Meaning and Definition

A two-dimensional graphical representation of colours, showing their chromaticity coordinates while excluding brightness information.

A standardised chart, such as the CIE 1931 xy chromaticity diagram, that maps all perceivable colours based on their hue and saturation, used in colour science, imaging, and display technology to specify and compare colours objectively.

Dialectal Variation

British vs American Usage

Differences

No significant lexical or spelling differences. The term is identical in both varieties.

Connotations

Identical technical connotations in both varieties.

Frequency

Equally rare and specialised in both UK and US English, confined to identical technical contexts.

Grammar

How to Use “chromaticity diagram” in a Sentence

The [colour/light source] is plotted on the chromaticity diagram.The gamut is represented within the chromaticity diagram.Refer to the CIE 1931 chromaticity diagram for specifications.

Vocabulary

Collocations

strong
CIE chromaticity diagramplot on the chromaticity diagramxy chromaticity diagramcoordinates on the chromaticity diagram
medium
standard chromaticity diagramcolour gamut in the chromaticity diagrampoint on the chromaticity diagram
weak
calculate chromaticity diagramrefer to the chromaticity diagramuse the chromaticity diagram

Examples

Examples of “chromaticity diagram” in a Sentence

verb

British English

  • The engineer will chromaticity-diagram the new display's gamut.
  • We need to chromaticity-diagram these samples.

American English

  • The technician will chromaticity-diagram the new display's gamut.
  • We need to chromaticity-diagram these samples.

adverb

British English

  • The colours were analysed chromaticity-diagrammatically.
  • He explained it chromaticity-diagram-wise.

American English

  • The colors were analyzed chromaticity-diagrammatically.
  • He explained it chromaticity-diagram-wise.

adjective

British English

  • The chromaticity-diagram analysis was crucial.
  • They used a chromaticity-diagram approach.

American English

  • The chromaticity-diagram analysis was critical.
  • They used a chromaticity-diagram approach.

Usage

Meaning in Context

Business

Extremely rare. Might be used in highly technical marketing or product specification for displays, lighting, or professional imaging equipment.

Academic

Primary context. Used in physics, engineering, computer science, and design papers and textbooks concerning colour theory, vision, and reproduction.

Everyday

Virtually never used.

Technical

Core context. Standard term in colour science, optical engineering, television/display calibration, digital imaging, and photographic standards.

Vocabulary

Synonyms of “chromaticity diagram”

Strong

CIE xy diagramchromaticity chart

Neutral

colour chart (technical)

Weak

colour space diagramcolour map

Vocabulary

Antonyms of “chromaticity diagram”

achromatic scalegreyscale chart

Watch out

Common Mistakes When Using “chromaticity diagram”

  • Pronouncing it as 'chromatic-ity' (with a hard 'c') instead of 'chroma-tis-ity'.
  • Using it to refer to any colour chart or palette.
  • Omitting 'diagram' and just saying 'chromaticity', which refers to the property, not the graph.

FAQ

Frequently Asked Questions

No. A colour wheel is a simple, often artistic, arrangement of hues. A chromaticity diagram is a precise, scientific graph based on human colour perception data, mapping all visible colours using mathematical coordinates.

CIE stands for Commission Internationale de l'Éclairage (International Commission on Illumination), the body that standardised the most widely used chromaticity diagrams in 1931.

No, that is its key feature. A chromaticity diagram only shows two dimensions: hue and saturation (chromaticity). Brightness (luminance) is a separate, third dimension.

You would most likely encounter it in technical specifications for high-end monitors, TVs, cameras, and lighting products, or in scientific/engineering literature related to colour, imaging, and optics.

A two-dimensional graphical representation of colours, showing their chromaticity coordinates while excluding brightness information.

Chromaticity diagram is usually technical/scientific in register.

Chromaticity diagram: in British English it is pronounced /ˌkrəʊməˈtɪsɪti ˈdaɪəɡræm/, and in American English it is pronounced /ˌkroʊməˈtɪsɪti ˈdaɪəɡræm/. Tap the audio buttons above to hear it.

Phrases

Idioms & Phrases

  • “Outside the gamut (of the chromaticity diagram)”

Learning

Memory Aids

Mnemonic

Think of 'chroma' for colour and 'city' as a place on a map. A chromaticity diagram is a 'city map for colours', plotting where each hue lives.

Conceptual Metaphor

A MAP for colours; a COLOUR TERRAIN.

Practice

Quiz

Fill in the gap
To objectively compare the two LEDs, their colour outputs were plotted on the standard .
Multiple Choice

What is the primary purpose of a chromaticity diagram?

chromaticity diagram: meaning, definition, pronunciation and examples | Lingvocore