HTML Entity for Double Struck Capital Gamma (ℾ)
What You'll Learn
How to display the Double Struck Capital Gamma (ℾ) in HTML using hexadecimal, decimal, and CSS entity methods. This character is U+213E (DOUBLE-STRUCK CAPITAL GAMMA) in the Letterlike Symbols block (U+2100–U+214F)—the open-face (double-struck) form of Greek capital Gamma used in mathematics, set theory, and scientific notation.
Render it with ℾ, ℾ, or CSS escape \213E. There is no named HTML entity for U+213E. For the regular (non-double-struck) capital Gamma use Γ or Γ (Γ). See also math entities.
⚡ Quick Reference — Double Struck Capital Gamma
U+213ELetterlike Symbols block
ℾHexadecimal reference
ℾDecimal reference
—Not available for U+213E
Name Value
──────────── ──────────
Unicode U+213E
Hex code ℾ
HTML code ℾ
Named entity —
CSS code \213E
Related U+0393 = Capital Gamma (Γ)Complete HTML Example
This example demonstrates the Double Struck Capital Gamma (ℾ) using hexadecimal code, decimal HTML code, and a CSS content escape. There is no named HTML entity:
<!DOCTYPE html>
<html>
<head>
<style>
#point:after{
content: "\213E";
}
</style>
</head>
<body>
<p>Double Struck Capital Gamma using Hexadecimal: ℾ</p>
<p>Double Struck Capital Gamma using HTML Code: ℾ</p>
<p id="point">Double Struck Capital Gamma using CSS Entity: </p>
</body>
</html>🌐 Browser Support
U+213E is widely supported in modern browsers when rendered with a font that includes Letterlike Symbols:
👀 Live Preview
See the Double Struck Capital Gamma (ℾ) in mathematical notation:
🧠 How It Works
Hexadecimal Code
ℾ uses the Unicode hexadecimal value 213E to display the Double Struck Capital Gamma. The x prefix indicates hexadecimal format.
Decimal HTML Code
ℾ uses the decimal Unicode value 8510 to display the same character.
CSS Entity
\213E is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.
Same visual result
All three methods produce: ℾ. Unicode U+213E. Regular capital Gamma is Γ (Γ, U+0393). No named entity for U+213E.
Use Cases
The Double Struck Capital Gamma (ℾ) commonly appears in:
Notation for sets, spaces, or variables using the double-struck Gamma in proofs and expressions.
Scientific notation and equations where the double-struck Gamma denotes a specific quantity.
Textbooks, papers, and course materials requiring letterlike math symbols in HTML.
Equation editors and math rendering alongside other double-struck Greek letters.
Entity lists and guides for Letterlike Symbols (U+2100–U+214F).
Use math-capable fonts so ℾ renders clearly for all readers.
💡 Best Practices
Do
- Use
ℾorℾfor ℾ - Use math fonts (Cambria Math, STIX Two Math) for reliable rendering
- Distinguish ℾ (double-struck) from Γ (
Γ, regular) - Use
\213Eonly inside CSScontent - Keep hex or decimal style consistent across the document
Don’t
- Assume a named entity exists for U+213E—it does not
- Use
Γwhen you need double-struck ℾ - Put CSS escape
\213Ein HTML text nodes - Forget UTF-8 (
<meta charset="utf-8">) on math pages - Assume every font includes Letterlike Symbols
Key Takeaways
No named entity—use numeric references
ℾ ℾFor CSS stylesheets, use the escape in the content property
\213EUnicode U+213E DOUBLE-STRUCK CAPITAL GAMMA
Regular Gamma: Γ via Γ or Γ
Three methods, one glyph — widely supported in modern browsers
❓ Frequently Asked Questions
ℾ (hex), ℾ (decimal), or \213E in CSS content. All produce ℾ. There is no named HTML entity for U+213E.U+213E (DOUBLE-STRUCK CAPITAL GAMMA). Letterlike Symbols block (U+2100–U+214F). Hex 213E, decimal 8510. Open-face form of Greek capital Gamma.ℾ or ℾ) go in markup. The CSS escape \213E is used in stylesheets, typically in the content property of pseudo-elements.Γ (U+0393, Γ)—not the same as ℾ.Explore More HTML Entities!
Discover 1500+ HTML character references — math symbols, letterlike glyphs, and more.
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