HTML Entity for Closed Omega (ɷ)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+0277

What You'll Learn

How to display the Latin small letter closed omega (ɷ) in HTML using hexadecimal, decimal, and CSS escape methods. This character is U+0277 in the Latin Extended-B block—a Latin letter used in phonetic and linguistic notation, not the Greek capital omega.

Render it with ɷ, ɷ, or CSS escape \0277. There is no named HTML entity. Do not confuse ɷ with Greek capital omega Ω (Ω, U+03A9) or the ohm sign Ω (U+2126). Uppercase form: ɶ (U+0276).

⚡ Quick Reference — Closed Omega

Unicode U+0277

Latin Extended-B

Hex Code ɷ

Hexadecimal reference

HTML Code ɷ

Decimal reference

Named Entity

No named entity

Reference Table
Name           Value
────────────   ──────────
Unicode        U+0277
Hex code       ɷ
HTML code      ɷ
Named entity   (none)
CSS code       \0277
Meaning        Latin small letter closed omega
Uppercase      U+0276 (ɶ)
Not the same   U+03A9 = Ω (Ω, Greek omega)
               U+2126 = Ω (ohm sign)
Block          Latin Extended-B (U+0180–U+024F)
1

Complete HTML Example

A simple example showing ɷ using hexadecimal code, decimal HTML code, and a CSS content escape. There is no named HTML entity:

html
<!DOCTYPE html>
<html>
<head>
 <style>
  #point::after{
   content: "\0277";
  }
 </style>
</head>
<body>
<p>Closed omega (hex): &#x0277;</p>
<p>Closed omega (decimal): &#631;</p>
<p id="point">Closed omega (CSS): </p>
</body>
</html>
Try it Yourself

🌐 Browser Support

The closed omega (ɷ) is supported in all modern browsers as part of Latin Extended-B:

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

👀 Live Preview

See the closed omega (ɷ) in phonetic and reference contexts:

Large glyph ɷ
Unicode name Latin small letter closed omega
Uppercase ɶ (U+0276) — LATIN CAPITAL LETTER CLOSED OMEGA
Not the same as Greek Ω (&Omega;, U+03A9)  |  Ohm Ω (U+2126)
Numeric refs &#x0277; &#631; \0277

🧠 How It Works

1

Hexadecimal Code

&#x0277; uses the Unicode hexadecimal value 0277 to display the closed omega character.

HTML markup
2

Decimal HTML Code

&#631; uses the decimal Unicode value 631 to display the same character.

HTML markup
3

CSS Entity

\0277 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: ɷ. Unicode U+0277 sits in Latin Extended-B. Do not confuse with Greek Ω (&Omega;) or ohm Ω.

Use Cases

The closed omega (ɷ) is commonly used in:

🔤 Phonetic notation

IPA extensions and linguistic transcription requiring the Latin closed-omega letter.

📚 Linguistics

Language documentation, dictionaries, and academic papers on phonology.

🇮🇪 African orthographies

Writing systems that include closed omega as a distinct Latin letter.

📄 Unicode references

Character charts, entity pickers, and HTML entity documentation.

🎨 Typography

Font specimens showcasing Latin Extended-B glyph support.

⚙ Programmatic HTML

When building markup from encoded text, &#631; or &#x0277; guarantees correct output.

♿ Accessibility

Correct encoding helps screen readers and assistive tech handle specialized letters properly.

💡 Best Practices

Do

  • Use &#x0277; or &#631; when escaping is required
  • Serve pages as UTF-8; you can type ɷ directly in UTF-8 source
  • Choose fonts that support Latin Extended-B (U+0180–U+024F)
  • Distinguish ɷ from Greek Ω (&Omega;) and ohm Ω
  • Pick one numeric style per project for consistency

Don’t

  • Use ɷ when you mean Greek capital omega Ω (&Omega;)
  • Confuse closed omega with the ohm unit symbol Ω (U+2126)
  • Use padded Unicode notation like U+00277—the correct value is U+0277
  • Expect a named HTML entity—none exists for ɷ
  • Put CSS escape \0277 in HTML text nodes

Key Takeaways

1

Two HTML numeric references plus CSS for U+0277

&#x0277; &#631;
2

For CSS stylesheets, use the escape in the content property

\0277
3

Unicode U+0277 — LATIN SMALL LETTER CLOSED OMEGA

4

Not Greek Ω (&Omega;) or ohm Ω; uppercase is ɶ

❓ Frequently Asked Questions

Use &#x0277; (hex), &#631; (decimal), or \0277 in CSS content. There is no named HTML entity for ɷ. In UTF-8 you can also type ɷ directly.
U+0277 (LATIN SMALL LETTER CLOSED OMEGA). Latin Extended-B block. Hex 0277, decimal 631. Uppercase form: U+0276 (ɶ).
No. ɷ (U+0277) is a Latin letter in Latin Extended-B. Ω (U+03A9, &Omega;) is the Greek capital letter omega. They are different characters with different uses.
In phonetic and linguistic notation, IPA extensions, African language orthographies, and Unicode documentation—whenever the source text specifies U+0277, not for general Greek omega or ohm symbols.
No. Use numeric codes &#631; or &#x0277;, or the CSS entity \0277. For Greek omega use &Omega; (U+03A9) instead.

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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.

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