---
id: w3css-color-libraries
title: "W3CSS Color Libraries"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["highway colors", "safety colors", "camouflage colors", "food colors", "W3.CSS 컬러 라이브러리"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.81
created_at: 2026-07-04
updated_at: 2026-07-04
review_reason: ""
merge_history: []
tags: ["w3css", "css-framework", "w3schools", "colors", "reference"]
raw_sources: ["https://www.w3schools.com/w3css/w3css_color_libraries.asp"]
applied_in: []
github_commit: ""
---

# [[W3CSS Color Libraries]]

## 🎯 한 줄 통찰 (One-line insight)
Several of these color libraries are traceable to formal REGULATORY standards, not arbitrary design choices — US highway and camouflage colors both cite Federal Standard 595, US safety colors cite the same standard, and European signal colors cite the RAL Color Standard — meaning these particular palettes exist specifically so a project can reproduce colors that carry real-world regulatory/safety meaning (e.g. an actual "STOP sign red"), a use case none of the design-trend palettes (Flat/Metro/Win8/iOS/Fashion) address. [S1]

## 🧠 핵심 개념 (Core concepts)
- **US Highway Colors (`w3-highway-*`)** — defined in Federal Standard 595 (brown, red, orange, schoolbus yellow, green, blue). [S1]
- **US Safety Colors (`w3-safety-*`)** — also Federal Standard 595 (red, orange, yellow, green, blue, purple) — for danger/warning signaling. [S1]
- **European Signal Colors (`w3-signal-*`)** — defined in the RAL Color Standard (yellow, orange, red, violet, blue, green, grey, brown, white, black). [S1]
- **Vivid Colors (`w3-vivid-*`)** — defined in ISCC-NBS, includes compound hue names like `w3-vivid-yellowish-pink`, `w3-vivid-bluish-green`. [S1]
- **Food Colors (`w3-food-*`)** — named directly after foods (apple, banana, avocado, saffron, wine, etc.) rather than a formal standard. [S1]
- **Camouflage Colors (`w3-camo-*`)** — also from Federal Standard 595 (earth, sand, forest, field tones). [S1]

## 📖 세부 내용 (Details)
- Loading and using a standards-based library: `<link rel="stylesheet" href="https://www.w3schools.com/lib/w3-colors-highway.css"><div class="w3-highway-red">STOP</div>`. [S1]
- Regulatory-meaning color use case: `<div class="w3-safety-red">DANGER</div>` — reproduces an officially defined hazard-warning red, not an arbitrary design red. [S1]
- Signal color composition for real traffic-light semantics: `<div class="w3-signal-red">Stop</div><div class="w3-signal-yellow">Wait</div><div class="w3-signal-green">Go</div>`. [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
- **규제 표준 기반 색상의 목적**: 하이웨이/안전/위장 색상이 Federal Standard 595, 유럽 신호 색상이 RAL Color Standard를 근거로 한다는 점에서, 이 라이브러리들은 미적 선택이 아니라 실제 규정을 재현하기 위한 목적임이 확인됨. [S1]

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — 실제 도로 표지판이나 안전 경고 색을 웹에서 정확히 재현해야 하는 시뮬레이션·교육용 프로젝트가 이 라이브러리의 실전 활용 대상이다. [S1]

## 💻 코드 패턴 (Code patterns)
Reproducing regulatory-standard traffic-light colors (HTML/CSS):
```html
<link rel="stylesheet" href="https://www.w3schools.com/lib/w3-colors-signal.css">
<div class="w3-signal-red">Stop</div>
<div class="w3-signal-yellow">Wait</div>
<div class="w3-signal-green">Go</div>
```

## ✅ 검증 상태 및 신뢰도
- **상태:** draft
- **검증 단계:** conceptual
- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
- **신뢰 점수:** 0.81
- **중복 검사 결과:** 신규 생성 (New discovery)

## 🔗 지식 그래프 (Knowledge Graph)
- **상위/루트:** [[W3.CSS Tutorial]]
- **관련 개념:** [[W3CSS Color Fashion]], [[W3CSS Color Schemes]]
- **참조 맥락:** 규제/표준 기반 컬러 라이브러리 — 색상 배색 이론(Color Schemes) 챕터로 이어짐.

## 📚 출처 (Sources)
- [S1] W3Schools — W3.CSS Color Libraries — https://www.w3schools.com/w3css/w3css_color_libraries.asp

## 📝 변경 이력 (Change history)
- 2026-07-04: Initial draft synthesized from the W3Schools "W3.CSS Color Libraries" page (Astra wiki-curation, P-Reinforce v3.1 format).
