{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.black","code":"thing-q23445","url":"https://ver.cy/models/thing/q23445/","name":"black","alternateNames":["eerie black","onyx","dark jungle green","Discord Black","sumi-iro","purplish black","nearly black","blackish","raven black","sooty","Furvus","Gray21"],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Cross-cutting context","entryKind":"thing","plane":"XCT","domain":["XCT.QLT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The darkest achromatic colour, perceived when a surface absorbs nearly all visible light; many named blacks exist, such as onyx or sumi ink black, and cultural meanings vary.","purpose":"Let an agent handle black by colour specification, materials, symbolism, contrast and accessibility.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Darkest achromatic colour","Absorbs most light","Many near-black variants","Symbolism varies by culture"],"structure":{"bundles":[{"id":"specification","name":"Specification","description":"Which black.","layers":[{"id":"code","name":"Code","description":"Colour system.","findings":[{"id":"code-finding","name":"Code","description":"Colour specification.","questions":[{"text":"Which colour system and code define this black?","kind":"definition"},{"text":"Is it tinted warm or cool?","kind":"definition"}]}]},{"id":"print","name":"Print","description":"Rich or pure.","findings":[{"id":"print-finding","name":"Print","description":"Print black.","questions":[{"text":"Should rich black or pure black be used for this print job?","kind":"action"},{"text":"What total ink limit applies?","kind":"measurement"}]}]}]},{"id":"design","name":"Design","description":"Contrast.","layers":[{"id":"contrast","name":"Contrast","description":"Legibility.","findings":[{"id":"contrast-finding","name":"Contrast","description":"Contrast.","questions":[{"text":"Does the text colour meet contrast guidelines on black?","kind":"boundary"},{"text":"What ratio?","kind":"measurement"}]}]},{"id":"dark-mode","name":"Dark mode","description":"Screens.","findings":[{"id":"dark-mode-finding","name":"Dark mode","description":"Dark themes.","questions":[{"text":"Is pure black or dark grey better for this interface?","kind":"action"},{"text":"Does it cause smearing on some screens?","kind":"boundary"}]}]}]},{"id":"materials","name":"Materials","description":"Pigments.","layers":[{"id":"pigments","name":"Pigments","description":"Carbon and iron oxide.","findings":[{"id":"pigments-finding","name":"Pigments","description":"Pigments.","questions":[{"text":"Which pigment produces this black?","kind":"definition"},{"text":"Is it safe for the intended use?","kind":"boundary"}]}]},{"id":"super-black","name":"Super-black","description":"Special coatings.","findings":[{"id":"super-black-finding","name":"Super-black","description":"Super-black materials.","questions":[{"text":"How do super-black coatings absorb light?","kind":"definition"},{"text":"What are they used for?","kind":"definition"}]}]}]},{"id":"culture","name":"Culture","description":"Meaning.","layers":[{"id":"symbolism","name":"Symbolism","description":"Associations.","findings":[{"id":"symbolism-finding","name":"Symbolism","description":"Symbolism.","questions":[{"text":"What does black signify in this culture or context?","kind":"provenance"},{"text":"Is it associated with mourning or formality?","kind":"definition"}]}]},{"id":"senses","name":"Senses","description":"People.","findings":[{"id":"senses-finding","name":"Senses","description":"Other senses.","questions":[{"text":"Is the word used to describe people, requiring respectful terminology?","kind":"boundary"},{"text":"Which entry fits?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Describe and specify black using a stated colour system.","Explain cultural meanings of black in different traditions."],"mustNot":["Use black in associations that demean people by skin colour.","Present one culture's meaning of black, such as mourning, as universal.","Reduce contrast in a design so that text becomes unreadable."],"requiresHuman":["Choosing colour codes for safety signs or warnings."]},"ethics":{"considerations":["Colour words have been used in racist language and imagery.","Colour meanings differ across cultures and can cause offence."],"affectedParties":["People of different cultures","People with low vision"]},"owners":{"steward":"Nobody: a colour held in common.","roles":[],"masterSystems":[]},"relations":[{"target":"Q11567360","type":"parent","note":"registry parent class"},{"target":"Q40890790","type":"parent","note":"registry parent class"},{"target":"achromatic color","type":"related","note":"category"},{"target":"white","type":"related","note":"colour"},{"target":"pigments such as carbon black","type":"related","note":"materials"},{"target":"colour systems","type":"related","note":"standards"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.black","Wikidata: Q23445 (https://www.wikidata.org/wiki/Q23445)","sRGB hex: #000000 screen colour"]},"properties":{"applicability":"not-applicable","items":[]},"recognition":{"applicability":"optional","items":["sRGB #000000 for pure black","Rich black in print (CMYK mix)","Named blacks in colour systems","The darkest colour, from pure to tinted blacks."]},"capabilities":{"applicability":"required","items":["specify black in colour systems","choose rich or pure black for print","check contrast","understand cultural meanings"]},"hazards":{"applicability":"required","items":["Poor contrast on dark backgrounds","Ink over-saturation in print","Assuming universal symbolism"]},"interfaces":{"applicability":"required","items":["CIE colorimetry","WCAG contrast guidelines","Print production standards such as ISO 12647"]},"context":{"applicability":"required","items":["Design, printing, text, clothing and symbolism.","pure black","rich black (print)","warm and cool blacks","pigment blacks such as carbon black","super-black materials"]}},"sources":[{"title":"Wikidata item Q23445: black","url":"https://www.wikidata.org/wiki/Q23445","note":"identity and sense of the item"},{"title":"Wikipedia: Black","url":"https://en.wikipedia.org/wiki/Black","note":"general description of the item"}],"openQuestions":["Should named blacks be separate entries?","How should print blacks be linked?","How should cultural meanings be recorded?"],"resources":{"spec":"/models/things/publications/thing-q23445/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q23445/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T08:35:59Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"not-applicable","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:51:57+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"Plane XCT: no invented physical properties."},"score":1.0}}