HTML Entity for Uppercase B Lower Stroke (Ƀ)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+0243
HTML Entity for Uppercase B Lower Stroke tutorial illustration

What You'll Learn

How to display the uppercase B with stroke (Ƀ) in HTML using hexadecimal, decimal, and CSS escape methods. This character is a variant of the Latin letter B with a lower stroke diacritic, used in linguistic text, phonetic scripts, and extended Latin orthography. It is U+0243 in the Latin Extended-B block.

Render it with Ƀ, Ƀ, or CSS escape \0243. There is no named HTML entity for this character, so numeric codes or CSS must be used.

⚡ Quick Reference — Uppercase B Lower Stroke Entity

Unicode U+0243

Latin Extended-B

Hex Code Ƀ

Hexadecimal reference

HTML Code Ƀ

Decimal reference

Named Entity —

No named entity

Reference Table
Name           Value
────────────   ──────────
Unicode        U+0243
Hex code       Ƀ
HTML code      Ƀ
Named entity   (none)
CSS code       \0243
Meaning        Latin capital letter B with stroke
Related        U+0180 = lowercase (ƀ)
Block          Latin Extended-B (U+0180–U+024F)
1

Complete HTML Example

A simple example showing the uppercase B lower stroke (Ƀ) using hexadecimal code, decimal HTML code, and a CSS content escape:

html
<!DOCTYPE html>
<html>
<head>
 <style>
  #point:after{
   content: "\0243";
  }
 </style>
</head>
<body>
<p>Symbol (hex): &#x0243;</p>
<p>Symbol (decimal): &#579;</p>
<p id="point">Symbol (CSS): </p>
</body>
</html>
Try it Yourself

🌐 Browser Support

The uppercase B lower stroke (Ƀ) renders correctly in modern browsers when UTF-8 is used:

Chrome1+
Firefox1+
Safari1+
Edge12+
Opera4+
Android4.4+
iOS Safari1+

👀 Live Preview

See the uppercase B lower stroke (Ƀ) and how it differs from related characters:

Large glyphɃ
Character typeLatin capital B with lower stroke
Case pairɃ (U+0243) / ƀ (U+0180)
Not the same asB (U+0042) or ʙ (small capital B)
Numeric refs&#x0243; &#579; \0243

🧠 How It Works

1

Hexadecimal Code

&#x0243; uses the Unicode hexadecimal value 0243 to display the character. The x prefix indicates hexadecimal format.

HTML markup
2

Decimal HTML Code

&#579; uses the decimal Unicode value 579 to display the same character. A common method for Latin Extended-B characters.

HTML markup
3

CSS Entity

\0243 is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.

CSS stylesheet
=

Same visual result

All three methods produce the glyph: Ƀ. Unicode U+0243 sits in Latin Extended-B. Lowercase equivalent: U+0180 (ƀ). Do not confuse Ƀ with plain B (U+0042). There is no named HTML entity.

✅

Use Cases

The uppercase B lower stroke (Ƀ) is commonly used in:

🔤 Linguistics

Phonetic transcriptions and linguistic notation requiring the B-with-stroke character.

📚 Academic

Dictionary entries, scholarly texts, and language references with extended Latin characters.

🌐 Internationalization

Websites requiring correct rendering of Latin Extended-B for specialized language content.

📄 Publishing

Books, articles, and editorial content with phonetic scripts or specialized terminology using Ƀ.

🎨 Orthography

Extended Latin orthographic systems where the stroked B variant is required for accuracy.

🔍 Search & SEO

Correct encoding so specialized content is indexed and displayed consistently.

📧 Forms & Input

User input that may contain Ƀ; use UTF-8 encoding and numeric entities as needed.

💡 Best Practices

Do

  • Use &#579; or &#x0243; in HTML (no named entity exists)
  • Serve pages as UTF-8; you can also type Ƀ directly in UTF-8 source
  • Pick one style (hex or decimal) per project for consistency
  • Use fonts that support Latin Extended-B (U+0180–U+024F)
  • Distinguish Ƀ from plain B (U+0042) and ʙ (small capital B)

Don’t

  • Assume a named entity exists—there is none for Ƀ
  • Substitute plain B when Ƀ is required for linguistic accuracy
  • Put CSS escape \0243 in HTML text nodes
  • Assume all fonts render Latin Extended-B glyphs identically
  • Mix entity styles randomly in one file

Key Takeaways

1

Three references render Ƀ (no named entity)

&#x0243; &#579;
2

For CSS stylesheets, use the escape in the content property

\0243
3

Unicode U+0243 — LATIN CAPITAL LETTER B WITH STROKE

4

Used in linguistic notation, phonetic scripts, and extended Latin orthography

5

Previous: Uppercase B Latin (ʙ)   Next: Uppercase B Script Capital (ℬ)

❓ Frequently Asked Questions

Use &#x0243; (hex), &#579; (decimal), or \0243 in CSS content. There is no named HTML entity; use numeric codes or CSS.
U+0243 (LATIN CAPITAL LETTER B WITH STROKE). Latin Extended-B block. Hex 0243, decimal 579. A variant of B with a lower stroke diacritic.
In linguistic and phonetic content, extended Latin orthography, academic texts, and any content requiring the B-with-stroke character.
HTML code (&#579; or &#x0243;) is used in HTML content. The CSS entity (\0243) is used in CSS, e.g. in the content property of pseudo-elements. Both produce Ƀ but in different contexts.
Named HTML entities are mainly for ASCII, Latin-1, and common symbols. Extended Latin characters like Ƀ use numeric codes because they belong to specialized Unicode blocks. This is standard for Latin Extended-B characters.

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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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