HTML Entity for Black Letter Capital Z (ℨ)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+2128
HTML entity for Black Letter Capital Z (U+2128) tutorial illustration

What You'll Learn

How to display the Black Letter Capital Z (ℨ) in HTML using various entity methods. This character is U+2128 in the Letterlike Symbols block (U+2100–U+214F), approved in Unicode 1.1 (1993). It is the Fraktur or black-letter variant of Latin capital Z—used in mathematical notation (for example Lie algebras) and in gothic or black-letter typography.

Unlike many symbols in this series, ℨ has a named HTML entity: ℨ (“Z Fraktur”). You can also use ℨ, ℨ, or \2128 in CSS content. All four methods render the same glyph in modern browsers.

⚡ Quick Reference — Black Letter Capital Z Entity

Unicode U+2128

Letterlike Symbols (U+2100–U+214F)

Hex Code ℨ

Hexadecimal reference

HTML Code ℨ

Decimal reference

Named Entity ℨ

Most readable option

Reference Table
Name           Value
────────────   ──────────
Unicode        U+2128
Hex code       ℨ
HTML code      ℨ
Named entity   ℨ
CSS code       \2128
1

Complete HTML Example

This example shows ℨ using hexadecimal and decimal references, the named entity ℨ, and a CSS content escape on a pseudo-element:

html
<!DOCTYPE html>
<html>
<head>
 <style>
  #point:after{
   content: "\2128";
  }
 </style>
</head>
<body>
<p>Black Letter Capital Z using Hexa Decimal: &#x2128;</p>
<p>Black Letter Capital Z using HTML Code: &#8488;</p>
<p>Black Letter Capital Z using HTML Entity: &Zfr;</p>
<p id="point">Black Letter Capital Z using CSS Entity: </p>
</body>
</html>
Try It Yourself

🌐 Browser Support

U+2128 and &Zfr; are widely supported in modern browsers; Fraktur glyphs vary by typeface:

Chrome 1+
Firefox 1+
Safari 1+
Edge 12+
Opera 4+
Android 4.4+
iOS Safari 1+

👀 Live Preview

See ℨ at different sizes and beside related letterlike symbols (font-dependent):

Large glyph ℨ
Letterlike set ℕ ℚ ℝ ℤ ℨ
Caption ℕ ℚ ℝ ℤ ℨ are common letterlike symbols; ℨ is Fraktur capital Z (U+2128).
Named entity &Zfr;
Monospace refs &#x2128; &#8488; \2128

🧠 How It Works

1

Hexadecimal Code

&#x2128; uses the Unicode hexadecimal value 2128 to display the Black Letter Capital Z symbol. The x prefix indicates hexadecimal format.

HTML markup
2

Decimal HTML Code

&#8488; uses the decimal Unicode value 8488 to display the same character. This is one of the most commonly used methods.

HTML markup
3

CSS Entity

\2128 is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.

CSS stylesheet
4

Named Entity

&Zfr; is the semantic named entity (“Z Fraktur”) — the easiest to read in source HTML.

HTML markup
=

Same visual result

All four methods produce ℨ. Unicode U+2128 is BLACK LETTER CAPITAL Z in the Letterlike Symbols block (U+2100–U+214F).

✅

Use Cases

The Black Letter Capital Z (ℨ) is commonly used for:

📐 Mathematical notation

Lie algebras, set theory, and academic math where Fraktur letters denote special sets.

✍ Typographic design

Fraktur or gothic typography, headlines, and vintage aesthetics.

🏷 Branding & logos

Company names, product labels, and distinctive logo treatments.

📚 Academic publishing

Mathematical papers, textbooks, and scholarly documents using letterlike symbols.

🎨 Unique text effects

Decorative headings, invitations, and creative layouts with Fraktur style.

🔢 Symbol sets

Alongside ℕ ℚ ℝ ℤ for consistent mathematical typography.

♿ Accessibility

Pair ℨ with MathML or ARIA labels for screen readers in mathematical content.

💡 Best Practices

Do

  • Prefer &Zfr; when readability matters in source markup
  • Use hex or decimal when consistency with other numeric entities is needed
  • Choose fonts that support the Letterlike Symbols block (U+2100–U+214F)
  • Use \2128 only inside CSS content, not in HTML text nodes
  • Pair Fraktur glyphs with plain-language labels in educational content

Don’t

  • Confuse ℨ (U+2128) with ordinary Latin Z or other Fraktur letters
  • Mix entity styles randomly in one codebase
  • Use CSS escape \2128 inside HTML text nodes
  • Assume every font renders Fraktur crisply at small sizes
  • Rely on ℨ alone without context in critical mathematical UI

Key Takeaways

1

Four equivalent references render ℨ

&#x2128; &#8488; &Zfr;
2

CSS content escape

\2128
3

U+2128 is Fraktur capital Z; Letterlike Symbols are U+2100–U+214F

4

&Zfr; is the most readable named entity for this character

5

Pair mathematical glyphs with text, MathML, or ARIA when meaning must be clear

❓ Frequently Asked Questions

Use &#x2128; (hex), &#8488; (decimal), &Zfr; (named), or \2128 in CSS content. All produce ℨ.
U+2128 (hex 2128, decimal 8488). Letterlike Symbols (U+2100–U+214F). Unicode name BLACK LETTER CAPITAL Z.
For typographic design, mathematical notation, Fraktur typography, branding, academic publishing, and unique text effects.
HTML entities (&#8488; or &Zfr;) go directly in markup. The CSS escape \2128 is used in stylesheets, typically in the content property of ::before or ::after. Same visual result, different layers of the stack.
Yes. &Zfr;, &#8488;, and &#x2128; are equivalent in modern browsers and all render ℨ.

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About the author

Mari Selvan M P
Mari Selvan M P 🔗

Developer, cloud engineer, and technical writer

  • Experience 12 years building web and cloud systems
  • Focus Full Stack Development, AWS, and Developer Education

I write practical tutorials so students and working developers can learn by doing—from databases and APIs to deployment on AWS.

AWS Certified Developer – Associate (Credly)

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