HTML Entity for Lowercase O Stroke Acute (ǿ)
What You'll Learn
How to display the lowercase o with stroke and acute (ǿ) in HTML using hexadecimal, decimal, and CSS escape methods. This character is U+01FF in the Latin Extended-B block—a single precomposed glyph with a diagonal stroke through o and an acute accent above.
Render it with ǿ, ǿ, or CSS escape \01FF. There is no named HTML entity. In UTF-8 documents you can also type ǿ directly. It appears in Faroese and in linguistic or phonetic notation where both diacritics apply to o.
⚡ Quick Reference — Lowercase O Stroke Acute Entity
U+01FFLatin Extended-B
ǿHexadecimal reference
ǿDecimal reference
—No named entity
Name Value
──────────── ──────────
Unicode U+01FF
Hex code ǿ
HTML code ǿ
Named entity (none)
CSS code \01FF
Meaning Latin small letter o with stroke and acute
Related U+01FE = Ǿ (uppercase)
Block Latin Extended-B (U+0180–U+024F)Complete HTML Example
A simple example showing the lowercase o stroke acute (ǿ) using hexadecimal code, decimal HTML code, the character directly, and a CSS content escape:
<!DOCTYPE html>
<html>
<head>
<style>
#point:after{
content: "\01FF";
}
</style>
</head>
<body>
<p>Symbol (hex): ǿ</p>
<p>Symbol (decimal): ǿ</p>
<p>Symbol (direct): ǿ</p>
<p id="point">Symbol (CSS): </p>
</body>
</html>🌐 Browser Support
The lowercase o stroke acute (ǿ) is supported in all modern browsers as part of Latin Extended-B:
👀 Live Preview
See the lowercase o stroke acute (ǿ) in language and notation contexts:
🧠 How It Works
Hexadecimal Code
ǿ uses the Unicode hexadecimal value 01FF to display the character. The x prefix indicates hexadecimal format.
Decimal HTML Code
ǿ uses the decimal Unicode value 511 to display the same character. A common method when a numeric reference is needed.
Direct Character
Type ǿ directly in HTML when your document uses UTF-8 encoding. There is no named entity for this letter.
CSS Entity
\01FF is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.
Same visual result
All methods produce the glyph: ǿ. Unicode U+01FF sits in Latin Extended-B. Uppercase equivalent: U+01FE (Ǿ). Do not confuse with ø (stroke only), ó (acute only), or plain o.
Use Cases
The lowercase o stroke acute (ǿ) is commonly used in:
Faroese texts and localization where the combined stroke-and-acute form on o is required.
Phonetic transcription and language documentation marking both stroke and acute on o.
Scholarly papers, dictionaries, and critical editions requiring precise diacritic combinations.
Nordic and linguistic content with correct extended Latin characters for readability and SEO.
Font specimens showcasing Latin Extended-B support for stacked diacritics.
Using U+01FF with proper lang attributes ensures assistive technologies interpret text correctly.
When building HTML from data, ǿ or ǿ guarantees correct output.
💡 Best Practices
Do
- Serve pages as UTF-8; you can type ǿ directly in UTF-8 source
- Use numeric references (
ǿorǿ) when escaping is required - Set
lang="fo"on Faroese content blocks - Use fonts that support Latin Extended-B (U+0180–U+024F)
- Distinguish ǿ from ø (stroke only), ó (acute only), and plain o
Don’t
- Substitute ø or ó when ǿ is the correct combined character
- Stack separate combining marks when the precomposed ǿ is intended
- Expect a named HTML entity—none exists for ǿ
- Put CSS escape
\01FFin HTML text nodes - Use ǿ for plain Faroese ø or ó when only one diacritic applies
Key Takeaways
Type ǿ directly, or use hex/decimal references
ǿ ǿFor CSS stylesheets, use the escape in the content property
\01FFUnicode U+01FF — LATIN SMALL LETTER O WITH STROKE AND ACUTE
Faroese & linguistics; uppercase is Ǿ (U+01FE)
Previous: Lowercase O Slash (ø) Next: Lowercase O Tilde
❓ Frequently Asked Questions
ǿ (hex), ǿ (decimal), or \01FF in CSS content. There is no named HTML entity for ǿ. In UTF-8 you can also type ǿ directly.U+01FF (LATIN SMALL LETTER O WITH STROKE AND ACUTE). Latin Extended-B block. Hex 01FF, decimal 511. Used in Faroese and linguistic notation. Uppercase form is U+01FE (Ǿ).ǿ or ǿ, or the CSS entity \01FF. In UTF-8 pages you can type ǿ directly.ø). ó (U+00F3) is o with acute only (ó). They are distinct precomposed characters—use the one that matches your text.Explore More HTML Entities!
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