---
id: w3css-color-schemes
title: "W3CSS Color Schemes"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["achromatic", "monochromatic", "flat design color scheme", "W3.CSS 색상 배색"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.82
created_at: 2026-07-04
updated_at: 2026-07-04
review_reason: ""
merge_history: []
tags: ["w3css", "css-framework", "w3schools", "colors", "color-theory"]
raw_sources: ["https://www.w3schools.com/w3css/w3css_color_schemes.asp"]
applied_in: []
github_commit: ""
---

# [[W3CSS Color Schemes]]

## 🎯 한 줄 통찰 (One-line insight)
"White on black" isn't just a stylistic dark-mode preference — the source gives it a concrete technical justification: it "requires less energy (improves battery life) on most display technologies," meaning the choice between the two achromatic schemes has a measurable hardware-power consequence, not just an aesthetic one. [S1]

## 🧠 핵심 개념 (Core concepts)
- **Achromatic schemes** — black-on-white (the default web page scheme) versus white-on-black (often preferred on small/mobile devices, saves battery). [S1]
- **Monochromatic schemes** — a single base color varied only by adding black/grey/white; described as having a subtler, more peaceful energy, especially with blue or green. [S1]
- **Flat design color schemes** — deliberately use MORE distinct colors than traditional schemes; W3.CSS's own scheme choices are explicitly inspired by Google Material Design. [S1]
- **Three named scheme types previewed** — Monochromatic, Analogous, Complementary (with deeper coverage pointed to the separate general "Colors Tutorial"). [S1]
- **W3.CSS Color Generator** — a tool (mentioned, not a teaching page) that can generate monochromatic scheme swatches automatically. [S1]

## 📖 세부 내용 (Details)
- White-on-black's power-saving rationale is stated directly: it "requires less energy (improves battery life) on most display technologies" — relevant for OLED-style mobile displays where black pixels draw less power. [S1]
- Flat design scheme example combining multiple distinct Material-inspired colors on sibling elements: Red/Green/Orange/Blue-Gray blocks each with "London is the most populous city..." text. [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
- **화이트 온 블랙의 실질적 근거**: 단순 취향이 아니라 대부분의 디스플레이 기술에서 배터리 수명을 개선한다는 구체적 기술적 이유가 명시됨. [S1]

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — 모바일 다크모드 UI에서 화이트 온 블랙 배색을 선택하는 근거로 배터리 절약 효과가 실전 활용 이유가 된다. [S1]

## 💻 코드 패턴 (Code patterns)
Flat design color scheme applying multiple distinct Material-inspired colors to sibling blocks (HTML/CSS):
```html
<div class="w3-red"><p>London is the most populous city...</p></div>
<div class="w3-green"><p>London is the most populous city...</p></div>
<div class="w3-orange"><p>London is the most populous city...</p></div>
<div class="w3-blue-gray"><p>London is the most populous city...</p></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:** 0.82
- **중복 검사 결과:** 신규 생성 (New discovery)

## 🔗 지식 그래프 (Knowledge Graph)
- **상위/루트:** [[W3.CSS Tutorial]]
- **관련 개념:** [[W3CSS Color Libraries]], [[W3CSS Trends]], [[W3CSS Color Themes]]
- **참조 맥락:** 색상 배색 이론 챕터 — 실전 컬러 테마 시스템(Color Themes) 챕터로 이어짐.

## 📚 출처 (Sources)
- [S1] W3Schools — W3.CSS Color Schemes — https://www.w3schools.com/w3css/w3css_color_schemes.asp

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