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Published

brown

vr.tr.brown · thing-q47071

Let an agent specify brown precisely and understand it as a dark or desaturated warm hue rather than a spectral colour.

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

Specification Which brown.

Value

Colour space.

Value

Colour value.

  1. Which exact brown, in which colour space? measurement
  2. Which named shade? definition

Nature

Why brown is special.

Nature

Perceptual nature.

  1. Why is brown not a spectral colour? definition
  2. How does surround change it? boundary
Pigments Making brown.

Earth pigments

Umber, sienna.

Pigment

Pigments.

  1. Which pigment makes it? definition
  2. Is it lightfast? measurement

Mixing

From primaries.

Mixing

Mixing.

  1. How can it be mixed? action
  2. In which medium? definition
Design Use.

Meaning

Associations.

Meaning

Associations.

  1. What does brown suggest in this culture? definition
  2. Is it tied to a brand? boundary

Contrast

Readability.

Contrast

Contrast.

  1. Does it have enough contrast? measurement
  2. Does it meet WCAG? boundary
Names Shade names.

Shades

Named browns.

Shades

Named shades.

  1. What does a named shade such as cork mean? definition
  2. Which system defines it? provenance

Translation

Across languages.

Translation

Colour words.

  1. How do languages divide the brown range? definition
  2. How should names be translated? action

Classifiers Filled

Family
Thing Registry
Category
Cross-cutting context
Entry kind
thing
Plane
XCT
Domain
XCT.QLT
Other names and narrower kinds
stout, putty, cork, amphora, RAL 050 30 30, madder brown, purplish brown, tile red, neon carrot, green-brown, brownish, snuff brown

What it is Filled

A composite colour of dark orange, red or yellow hues with low lightness, seen in wood, soil and leather, with shades from putty to madder brown.

Why it exists Filled

Let an agent specify brown precisely and understand it as a dark or desaturated warm hue rather than a spectral colour.

Distinguishing features Filled

  • Not a spectral colour; a dark orange or red
  • Depends on context and surround
  • Common earth pigments
  • Stout and cork aliases refer to shades

What robots and AI may and may not do Filled

Must not

  • Use skin colour to classify or rank people.
  • Misreport colour where it matters for safety or quality, such as in food or wiring.
  • Present one colour name as universal when languages divide colours differently.

Only with a human decision

  • Using colour as a basis for decisions about people.

May

  • Name and match shades of brown using a stated colour system.
  • Describe the colour of objects in images or samples.

Moral aspects Filled

  • Colour terms for skin have been used to discriminate.
  • Colour perception differs between people, including those with colour vision deficiency.

Who is affected

  • People described by colour
  • People with colour vision deficiency

Owners Filled

Steward

Nobody: a colour held in common.

Links to other meta-models Filled

parent

  • Q1075 - registry parent class

related

  • color - hue family
  • pigment - earth pigments
  • orange and red - hues
  • design - application

What else AI and robots need to interact with it Filled

Identity and identifiers required Filled

  • Vercy registry: vr.tr.brown
  • Wikidata: Q47071 (https://www.wikidata.org/wiki/Q47071)
  • RAL code: 8000 series industrial browns

Direct properties not applicable Not applicable

Not applicable

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Dark warm hues
  • Named shades such as cork or madder brown
  • RAL and other system codes
  • The colour of wood, soil, chocolate and leather.

Capabilities and actions required Filled

  • specify it in a colour space
  • mix it from pigments
  • use it in design
  • check contrast

Hazards and failure modes required Filled

  • Poor contrast of brown text on dark backgrounds

Standards and interfaces required Filled

  • WCAG contrast

Context of use required Filled

  • Describing and designing with earthy tones.
  • shades: tan, chocolate, umber, sienna
  • earth pigments such as umber and sienna
  • named shades in colour systems

Sources Filled

  1. Wikidata item Q47071: brown - identity and sense of the item
  2. Wikipedia: Brown - general description of the item

Open questions

  • Which reference brown should be used?
  • How should context-dependence be explained?
  • Should earth pigments be separate entries?

Machine files

Card as JSON Specification Card backlog vercy.card/1

Provenance

thing registry research (pass 2) · unreviewed

Built from: models/things/publications/thing-q47071/spec.json