HTML Entity for Uppercase U Circumflex (Û)

Beginner

5 min read

Updated: Sep 2026

1 example

Unicode U+00DB

HTML Entity for uppercase U circumflex (U+00DB) tutorial illustration

Definition

What Is Uppercase U Circumflex?

Uppercase U Circumflex (Û) is the Latin-1 Supplement character at Unicode U+00DB (LATIN CAPITAL LETTER U WITH CIRCUMFLEX). HTML5 names it Û. Use it for French, Kurdish, and other Latin-script text that needs Û.

Remember

Character     Û
Unicode       U+00DB
Named entity  &Ucirc;
Hex entity    &#xDB;
Decimal       &#219;
CSS escape    \00DB
Not the same  &ucirc; (û) · U · &Uuml; · caron

Named, hex, decimal, CSS, and a typed character all produce the same glyph: Û. Prefer Û or Û in HTML markup. For the lowercase form see û; for U with umlaut see uppercase U umlaut.

Reference

Quick Reference

One table for every form you will actually use.

Form	Code	Where it goes
Named entity	`Û`	HTML markup (best default)
Hex entity	`Û`	HTML markup
Decimal entity	`Û`	HTML markup
CSS escape	`\00DB`	Stylesheet `content`
Direct character	`Û`	UTF-8 HTML text
Lowercase pair	`û` (U+00FB)	Small letter u with circumflex

When to Use Which

Situation	Use
Capital U with circumflex	`Û` or `Û`
Numeric-only markup	`Û` or `Û`
Generated text via `::before` / `::after`	`content: "\00DB"`
Lowercase u with circumflex	Use û (U+00FB)
Plain capital U	Type `U` (U+0055)
U with umlaut / diaeresis	Use Ü (U+00DC)
U with caron	Use Ǔ (`Ǔ`)

See it

Live Preview

Û in French context, compared with lowercase and related look-alikes.

French Case pair: Û / û

Large glyph Û

Named entity Û → Û

vs look-alikes Û | û | U | Ü | Ǔ

With entities Named: Û | Hex: Û | Decimal: Û

Code

Complete HTML Example

One page that shows Uppercase U Circumflex with named, hex, decimal, CSS escape, and a typed character. Use View Output or open the live editor.

Named + Hex + Decimal + CSS + Typed

Five ways to display Û in HTML and CSS.

html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Uppercase U Circumflex (Û)</title>
  <style>
    #point::after {
      content: "\00DB";
    }
  </style>
</head>
<body>
  <p>Built with Named: &Ucirc;</p>
  <p>Built with Hex: &#xDB;</p>
  <p>Built with Decimal: &#219;</p>
  <p id="point">Built with CSS: </p>
  <p>Typed: Û</p>
  <p lang="fr">Case pair: &Ucirc; / &ucirc;</p>
</body>
</html>

Try It Yourself

How It Works

1. Named: Û is the HTML5 name for U+00DB → Û (case-sensitive: capital U).

2. Hex / decimal: Û or Û insert the same code point.

3. Typed: in a UTF-8 document you can paste Û directly — same glyph, no entity.

4. CSS: use \00DB in content (not an HTML entity). #point::after appends that Û after the paragraph text.

5. Case pair: lowercase is û (U+00FB, û) — see lowercase U circumflex.

Pitfalls & Tips

Common mistakes when working with Uppercase U Circumflex.

Case

Named entity is case-sensitive

Û is Û. û is û. Do not mix them.

Plain U

Not the same as plain U

Plain U (U+0055) has no circumflex. Do not substitute it when Û is required.

Not U with umlaut

U+00DC (Ü, Ü) uses a diaeresis, not a circumflex. See uppercase U umlaut.

Caron

Circumflex ≠ caron

U+01D3 (Ǔ) uses a caron (ˇ), not a circumflex (ˆ). See uppercase U caron.

Combining

Prefer the precomposed letter

Use U+00DB instead of U + combining circumflex (U+0302) when the precomposed form is available.

CSS vs HTML

Do not mix escapes

\00DB belongs in CSS strings. Û / Û / Û belong in HTML.

Compatibility

Browser Support

Uppercase U Circumflex (U+00DB) and its entity forms (Û, Û, Û, CSS \\00DB) are supported in all mainstream browsers when the page is UTF-8 and the font covers Latin-1 Supplement.

✓ Universal support

Uppercase U Circumflex (Û)

Encode with named, hex, decimal, CSS escape, or type the character — same Unicode code point everywhere.

100% Browser coverage

Google Chrome Supported

Yes

Microsoft Edge Supported

Yes

Mozilla Firefox Supported

Yes

Apple Safari Supported

Yes

Opera Supported

Yes

Internet Explorer All versions

Yes

U+00DB / Û Full support

Bottom line: Prefer Û in HTML text. Use Û / Û as equivalents, and \\00DB only inside CSS content. Glyph display depends on font coverage.

Remember

Key Takeaways

Unicode: this letter is U+00DB (decimal 219) — glyph Û.
HTML: prefer Û — also Û / Û.
CSS: use \00DB inside content for generated text.
Watch out: Û ≠ plain U ≠ Ü ≠ Ǔ ≠ û.

One line: U+00DB → Û / Û / Û / CSS \00DB.

Frequently Asked Questions

How do I display Uppercase U Circumflex (Û) in HTML using entities?

Use Û (named), Û (hex), Û (decimal), or the CSS escape \00DB in the content property. All render Û. Prefer Û or Û for readable markup.

What is the Unicode value for Uppercase U Circumflex?

U+00DB (LATIN CAPITAL LETTER U WITH CIRCUMFLEX). Hex DB, decimal 219, named entity Û. It belongs to Latin-1 Supplement (U+0080–U+00FF).

Is there a named HTML entity for U+00DB?

Yes. HTML5 defines Û for U+00DB. It is case-sensitive — write Ucirc with a capital U. Lowercase û is a different character (û).

How is U+00DB different from U+0055, U+00DC, or U+01D3?

U+00DB (Û) is capital U with a circumflex (ˆ). U+0055 is plain U. U+00DC (Ü) uses a diaeresis/umlaut. U+01D3 uses a caron (ˇ).

When should I use this HTML entity?

Use it for French, Kurdish, and other Latin-script text that needs capital U with circumflex.

What is the difference between HTML code and CSS entity for U+00DB?

HTML entities (Û, Û, or Û) go in markup. The CSS escape \00DB is used in stylesheets (usually in the content property of ::before/::after). Both render Û.

Did you know?

Uppercase U Circumflex is Unicode U+00DB (decimal 219) — glyph Û (LATIN CAPITAL LETTER U WITH CIRCUMFLEX) in Latin-1 Supplement. HTML5 names it Û (case-sensitive — capital U). Prefer it for French, Kurdish, and other Latin-script text that needs Û. Do not confuse it with lowercase û (û), plain U, umlaut Ü (Ü), or caron (U+01D3).

Next: Uppercase U Diaeresis Acute

Learn the HTML entity for capital U with diaeresis and acute — next in this sequence.

Continue tutorial →

About the author

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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