HTML Entity for Combining Double Low Line (̳)
What You'll Learn
How to display the Combining Double Low Line (̳) in HTML and CSS. This character is U+0333 (COMBINING DOUBLE LOW LINE) in the Combining Diacritical Marks block (U+2000–U+206F)—a double horizontal line at the baseline, similar in appearance to a double underscore.
There is no named HTML entity for U+0333. Use ̳, ̳, or \0333 in CSS content. Do not confuse with U+0333 (combining combining double low line under a letter) or two ASCII underscores (__).
⚡ Quick Reference — Combining Double Low Line
U+0333Combining Diacritical Marks (U+2000–U+206F)
̳Hexadecimal reference
̳Decimal reference
—None (use numeric refs)
Name Value
──────────── ──────────
Unicode U+0333
Hex code ̳
HTML code ̳
Named entity —
CSS code \0333
Related U+0333 = Combining combining double low line; __ = two U+005FComplete HTML Example
This example shows U+0333 using hexadecimal and decimal references, inline decoration, plus a CSS content escape. There is no named HTML entity:
<!DOCTYPE html>
<html>
<head>
<style>
#point:after{
content: "\0333";
}
</style>
</head>
<body>
<p>Combining Double Low Line using Hexadecimal: ̳</p>
<p>Combining Double Low Line using HTML Code: ̳</p>
<p id="point">Combining Double Low Line using CSS Entity: </p>
</body>
</html>🌐 Browser Support
U+0333 is widely supported in modern browsers; Combining Diacritical Marks glyphs render in virtually all fonts:
👀 Live Preview
See the Combining Double Low Line (̳) in typography and decoration:
🧠 How It Works
Hexadecimal Code
̳ references code point U+0333 using hex digits 0333. Use it inline in HTML text (e.g. Section̳Title).
Decimal HTML Code
̳ uses the decimal Unicode value 819 for the same character.
CSS Entity
\0333 is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.
Same visual result
All three methods produce: ̳. Unicode U+0333. Not __ (two ASCII underscores) or U+0333 (combining under a letter).
Use Cases
The Combining Double Low Line (̳) commonly appears in:
Double horizontal line at the baseline for visual separation or underlining-style decoration.
Contexts requiring U+0333 (paragraphos-style marks, older publishing or indexing).
Prefer ̳ over two ASCII underscores (__) for consistency or encoding.
Use \0333 in content on pseudo-elements for generated decoration.
Entity reference pages for Combining Diacritical Marks (U+2000–U+206F).
When ̳ is decorative, use clear markup and alternative text for assistive technologies.
💡 Best Practices
Do
- Use
̳or̳for the combining double low line character - Use
<meta charset="utf-8">on all pages - Pick hex or decimal consistently within one document
- For underlining under a letter, use U+0333 (
̳) instead - Use CSS
\0333only in stylesheets, not in HTML text
Don’t
- Confuse U+0333 (̳) with
__(two U+005F underscores) - Confuse with U+0333 (combining combining double low line under text)
- Put CSS escape
\0333inside HTML text nodes - Expect a named HTML entity (none exists for U+0333)
- Use ̳ for semantic emphasis without accessible alternatives
Key Takeaways
Two HTML references for the combining double low line
̳ ̳For CSS stylesheets, use the escape in the content property
\0333U+0333 — double horizontal line at baseline
Not the same as __ (two ASCII underscores)
No named entity — use numeric references
❓ Frequently Asked Questions
̳ (hex), ̳ (decimal), or \0333 in CSS content. All produce ̳. There is no named HTML entity for U+0333.U+0333 (COMBINING DOUBLE LOW LINE). Combining Diacritical Marks block (U+2000–U+206F). Hex 0333, decimal 819. Double horizontal line at the baseline.̳ or ̳) go in markup. The CSS escape \0333 is used in stylesheets, typically in the content property of pseudo-elements.U+0333 (̳) is one Unicode character. __ is two ASCII underscore characters (U+005F). They can look similar; use U+0333 when you need a single code point. For combining underline under text, use U+0333.Explore More HTML Entities!
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