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Published

violet

vr.tr.violet · thing-q428124

Let an agent identify and specify violet shades, explain spectral violet versus purple, provide colour codes and accessibility guidance, and describe cultural and symbolic uses.

Thing Registry Cross-cutting context XCT.QLT
Bundle → Layer → Finding → QuestionsClassifiersWhat it isWhy it existsDistinguishing featuresWhat robots and AI may and may not doMoral aspectsOwnersLinks to other meta-modelsIdentity and identifiersDirect propertiesRecognitionCapabilities and actionsHazards and failure modesStandards and interfacesContext of useSources

Bundle → Layer → Finding → Questions Filled

4 bundles · 8 layers · 8 findings · 16 questions

Specify Colour codes.

Codes

Hex and other values.

Codes

Codes.

  1. What are the hex, RGB and other values for this violet shade? provenance
  2. Which standard defines it? provenance

Shades

Named shades.

Shades

Named shades.

  1. How do red-violet, dark violet and cobalt violet differ? definition
  2. Which pigments produce them? provenance
Science Physics and perception.

Spectral

Spectral violet.

Spectral

Spectral violet.

  1. Why is violet a spectral colour while purple is not? definition
  2. How do displays reproduce violet? definition

Perception

Seeing violet.

Perception

Perception.

  1. How do people with colour vision deficiency perceive violet? provenance
  2. Why does violet appear reddish to some observers? provenance
Design Using violet.

Contrast

Accessibility.

Contrast

Accessibility.

  1. Does this violet meet WCAG contrast requirements against the background? measurement
  2. Which pairings work? action

Palette

Palettes.

Palette

Palettes.

  1. Which palettes suit this violet for the intended mood? action
  2. How does it print versus display? provenance
Culture Meaning.

Symbolism

Symbolic uses.

Symbolism

Symbolism.

  1. What does violet symbolise in this culture or tradition, according to sources? provenance
  2. Which movements have used it? provenance

Nature

Violet in nature.

Nature

Nature.

  1. Which flowers, minerals and animals are violet, and why? provenance
  2. Which entry fits the violet flower? action

Classifiers Filled

Family
Thing Registry
Category
Cross-cutting context
Entry kind
thing
Plane
XCT
Domain
XCT.QLT
Other names and narrower kinds
bright ube, violet red, red-violet, cobalt violet, dark violet, pale violet red, thistle

What it is Filled

Violet is a colour at the short-wavelength end of the visible spectrum, between blue and ultraviolet, spectrally around 380 to 450 nanometres; purple is nonspectral, while pigment and design names such as cobalt violet, red-violet and dark violet describe related hues rather than necessarily spectral violet, and the flower-derived name is used in art, design, symbolism and colour standards.

Why it exists Filled

Let an agent identify and specify violet shades, explain spectral violet versus purple, provide colour codes and accessibility guidance, and describe cultural and symbolic uses.

Distinguishing features Filled

  • Short-wavelength spectral colour
  • Bluish purple
  • Many named shades
  • Named after the flower

What robots and AI may and may not do Filled

Must not

  • Confuse violet light with ultraviolet when advising on eye or skin exposure.
  • Misrepresent a colour in product listings so buyers receive something else.
  • Ignore colour-vision differences when using violet as the only signal in a display.

Only with a human decision

  • Choosing colours for safety signs or medical displays.

May

  • Describe violet as a spectral colour and as hues in pigments and dyes.
  • Convert between wavelength and colour coordinates, stating the colour space.

Moral aspects Filled

  • Colour symbols carry religious, political and cultural meanings.
  • Colour-only signals exclude people with colour-vision deficiency.

Who is affected

  • Viewers and users of displays
  • People with colour-vision deficiency

Owners Filled

Steward

Nobody: a colour held in common.

Links to other meta-models Filled

parent

  • Q3257809 - registry parent class

related

  • purple - category
  • blue - spectrum neighbour
  • radiation - visible light
  • afterglow - purple light in twilight

What else AI and robots need to interact with it Filled

Identity and identifiers required Filled

  • Vercy registry: vr.tr.violet
  • Wikidata: Q428124 (https://www.wikidata.org/wiki/Q428124)

Direct properties not applicable Not applicable

  • spectral wavelength: about 380-450 nm

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Spectral violet lies between blue and ultraviolet.
  • Violet is a spectral colour at short visible wavelengths.
  • Purple is nonspectral and can result from a mixture of red and blue light.
  • A bluish purple hue.

Capabilities and actions required Filled

  • specify violet in colour systems
  • distinguish violet from purple
  • check contrast and accessibility
  • describe symbolism and uses

Hazards and failure modes required Filled

  • Confusing violet and purple
  • Poor contrast in design
  • Display differences

Standards and interfaces required Filled

  • Colour standards such as sRGB and Pantone
  • WCAG contrast guidelines

Context of use required Filled

  • Colour identification, design and culture.
  • spectral violet
  • cobalt violet and other pigments
  • red-violet and dark violet shades
  • web and design violets
  • violet in nature such as flowers and minerals

Sources Filled

  1. Wikidata item Q428124: violet - identity and sense of the item
  2. Wikipedia: Violet (color) - general description of the item

Open questions

  • Should named shades be separate entries?
  • How should colour standards be linked?
  • How should cultural meanings be attributed?

Machine files

Card as JSON Specification Card backlog vercy.card/1

Provenance

thing registry research (pass 2) · unreviewed

Built from: models/things/publications/thing-q428124/spec.json