2nd/10_Wiki/Topic_CSS/CSS_Gradients_Conic.md

---
id: css-conic-gradients
title: "CSS Conic Gradients"
category: "Frontend"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["conic-gradient", "CSS conic gradient", "repeating-conic-gradient", "pie chart CSS", "color wheel gradient"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.9
created_at: 2026-06-23
updated_at: 2026-06-23
review_reason: ""
merge_history: []
tags: ["css", "web", "frontend", "w3schools", "gradients", "conic-gradient", "background-image"]
raw_sources: ["https://www.w3schools.com/css/css3_gradients_conic.asp"]
applied_in: []
github_commit: ""
---

# [[CSS Conic Gradients]]

## 🎯 한 줄 통찰 (One-line insight)
A conic gradient (`conic-gradient()`) rotates its color transitions around a center point (rather than radiating outward), making it the natural tool for pie charts and color wheels; it needs at least two colors and is applied through `background-image`. [S1]

## 🧠 핵심 개념 (Core concepts)
- **Conic = rotated around a center** — a conic gradient is a gradient with color transitions rotated around a center point. [S1]
- **At least two colors** — to create a conic gradient you must define at least two colors. [S1]
- **Defaults** — the default starting angle is `0deg` and the default position is `center`; colors are spread equally if no degree is specified. [S1]
- **Optional angle (`from`) and position (`at`)** — you can specify a starting angle with `from` and a center position with `at`. [S1]
- **Pie charts** — combining a conic gradient with `border-radius: 50%` turns the box into a pie chart. [S1]

## 🧩 추출된 패턴 (Extracted patterns)
- **Equal-spread pattern** — `conic-gradient(color1, color2, ...)` spreads colors equally around the circle. [S1]
- **Degree-stop pattern** — append degrees (`red 45deg`) to control where each color band sits. [S1]
- **Pie-chart pattern** — conic gradient + `border-radius: 50%`. [S1]
- **`from`/`at` pattern** — set starting angle and center: `conic-gradient(from 90deg, ...)`, `conic-gradient(at 60% 45%, ...)`. [S1]
- **Repeating pattern** — `repeating-conic-gradient()` tiles a defined color sequence. [S1]

## 📖 세부 내용 (Details)
**Syntax** [S1]
```
background-image: conic-gradient([from angle] [at position,] color [degree], color [degree], ...);
```
The default angle is `0deg`, the default position is `center`, and colors are spread equally if no degree is specified.

**Three colors (equal spread)** [S1]
```css
#grad {
  background-image: conic-gradient(red, yellow, green);
}
```

**Five colors** [S1]
```css
#grad {
  background-image: conic-gradient(red, yellow, green, blue, black);
}
```

**Three colors with degrees** [S1]
```css
#grad {
  background-image: conic-gradient(red 45deg, yellow 90deg, green 210deg);
}
```

**Create a Pie Chart (basic)** [S1]
Add `border-radius: 50%` to make the conic gradient look like a pie chart:
```css
#grad {
  background-image: conic-gradient(red, yellow, green, blue, black);
  border-radius: 50%;
}
```

**Create a Pie Chart with defined degrees** [S1]
```css
#grad {
  background-image: conic-gradient(red 0deg, red 90deg, yellow 90deg, yellow 180deg, green 180deg, green 270deg, blue 270deg);
  border-radius: 50%;
}
```

**Conic Gradient with specified starting angle (`from`)** [S1]
```css
#grad {
  background-image: conic-gradient(from 90deg, red, yellow, green);
}
```

**Conic Gradient with specified center position (`at`)** [S1]
```css
#grad {
  background-image: conic-gradient(at 60% 45%, red, yellow, green);
}
```

**Repeating a Conic Gradient (basic)** [S1]
The `repeating-conic-gradient()` function is used to repeat conic gradients:
```css
#grad {
  background-image: repeating-conic-gradient(red 10%, yellow 20%);
  border-radius: 50%;
}
```

**Repeating Conic Gradient with color stops** [S1]
```css
#grad {
  background-image: repeating-conic-gradient(red 0deg 10deg, yellow 10deg 20deg, blue 20deg 30deg);
  border-radius: 50%;
}
```

**CSS Gradient Functions reference table** [S1]

| Function | Purpose |
|----------|---------|
| `conic-gradient()` | Conic gradient around a center point |
| `linear-gradient()` | Linear gradient top-to-bottom |
| `radial-gradient()` | Radial gradient center-to-edges |
| `repeating-conic-gradient()` | Repeated conic pattern |
| `repeating-linear-gradient()` | Repeated linear pattern |
| `repeating-radial-gradient()` | Repeated radial pattern |

## 🛠️ 적용 사례 (Applied in summary)
The page's own demonstrations (the `#grad` element showing equal-spread, degree stops, pie charts, `from`/`at`, and repeating conic gradients) serve as the applied examples. No external project/commit applications found in the source.

## 💻 코드 패턴 (Code patterns)
Basic conic gradient (language: CSS):
```css
#grad {
  background-image: conic-gradient(red, yellow, green);
}
```
Pie chart:
```css
#grad {
  background-image: conic-gradient(red, yellow, green, blue, black);
  border-radius: 50%;
}
```
Repeating conic gradient:
```css
#grad {
  background-image: repeating-conic-gradient(red 10%, yellow 20%);
  border-radius: 50%;
}
```

## ⚖️ 비교 및 선택 기준 (Comparison & decision criteria)
- **Conic vs radial** — both are defined relative to a center, but a radial gradient radiates color *outward* from the center while a conic gradient rotates colors *around* the center; conic is the choice for pie charts and color wheels. [S1]
- **Equal spread vs degree stops** — omit degrees to spread colors equally; supply degrees (`red 45deg`) to place exact bands, as required for a defined pie chart. [S1]
- **Single vs repeating** — use `repeating-conic-gradient()` for tiled patterns such as checkerboards/spokes. [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
No contradictions found in the source.

## ✅ 검증 상태 및 신뢰도
- **상태:** draft
- **검증 단계:** conceptual (실제 적용 사례 발견 시 applied/validated로 승격 가능)
- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
- **신뢰 점수:** 0.90
- **중복 검사 결과:** 신규 생성 (New discovery)

## 🔗 지식 그래프 (Knowledge Graph)
- **상위/루트:** [[CSS Tutorial]]
- **관련 개념:** [[CSS Linear Gradients]], [[CSS Radial Gradients]], [[CSS Box Shadow]]
- **참조 맥락:** Referenced whenever a rotated color transition (pie chart, color wheel) is needed via `background-image`.

## 📚 출처 (Sources)
- [S1] W3Schools — CSS Conic Gradients — https://www.w3schools.com/css/css3_gradients_conic.asp

## 📝 변경 이력 (Change history)
- 2026-06-23: Initial draft synthesized from the W3Schools "CSS Conic Gradients" page (Astra wiki-curation, P-Reinforce v3.1 format).