Uppercase O circumflex (Ô) is the Unicode character at U+00D4 in Latin-1 Supplement. Official name: LATIN CAPITAL LETTER O WITH CIRCUMFLEX — a capital O with a circumflex accent (^), common in French, Portuguese, and Vietnamese.
Remember
Character Ô
Unicode U+00D4
Named entity Ô (capital O)
Hex entity Ô
Decimal Ô
CSS escape \00D4
Not the same ô · Ó · Ò
Prefer Ô in HTML markup — the capital O in the name matters. Numeric forms and typing Ô in UTF-8 also work. For the lowercase letter, use ô (ô).
Using Named Entity: Ô
Using Hex Code: Ô
Using HTML Code: Ô
Using CSS Entity: Ô
Typed directly: Ô
Word: HÔTEL
How It Works
1. Named:Ô (capital O) is the clearest HTML form for U+00D4. Lowercase ô is a different character (ô).
2. Hex:U+00D4 → Ô in HTML. Same glyph as the named entity.
3. Decimal: same code point as 212 → Ô. Same glyph as hex and named.
4. CSS: use \00D4 in content (not an HTML entity). #point::after appends that Ô after the paragraph text.
5. Typed / word: paste Ô in UTF-8, or build French words like HÔTEL with lang="fr".
Pitfalls & Tips
Common mistakes when working with U+00D4.
Case
Ô ≠ ô
Ô → Ô (capital). ô → ô (lowercase). Entity names are case-sensitive.
vs Ó
Not an acute
Ó (Ó) is O with acute. Circumflex Ô and acute Ó are different letters.
vs Ò
Not a grave
Ò (Ò) is O with grave. Do not swap circumflex and grave.
Encoding
Keep UTF-8 declared
Latin-1 letters display reliably with <meta charset="UTF-8">. Prefer named entities when the source file encoding is uncertain.
CSS vs HTML
Do not mix escapes
\00D4 belongs in CSS strings. Ô / Ô / Ô belong in HTML.
A11y
Use real language context
When Ô appears in French or Portuguese words, keep surrounding text and lang accurate (for example fr) so screen readers get useful context.
Compatibility
Browser Support
Uppercase O circumflex (U+00D4) and its entity forms (Ô, Ô, Ô, CSS \\00D4) are supported in all mainstream browsers. Latin-1 glyphs are widely available in system fonts.
✓ Universal support
Uppercase O Circumflex (Ô)
Encode with named, hex, decimal, CSS escape, or type the character — same code point everywhere encoding is supported.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerAll versions
Yes
U+00D4 / ÔFull support
Bottom line: Prefer Ô (capital O) in HTML. Use \\00D4 only inside CSS content. Do not confuse with ô (ô), acute Ó, or grave Ò.
Remember
Key Takeaways
Unicode: uppercase O circumflex is U+00D4 (decimal 212) — glyph Ô.
HTML: prefer Ô (capital O) — also Ô / Ô.
CSS: use \00D4 inside content for generated text.
Meaning:Ô is capital circumflex — not ô (ô), not Ó (acute), not Ò (grave).
Use Ô (named), Ô (hex), Ô (decimal), type Ô directly in UTF-8, or the CSS escape \00D4 in content. Prefer Ô in normal HTML.
U+00D4 (LATIN CAPITAL LETTER O WITH CIRCUMFLEX). Hex D4, decimal 212. It belongs to Latin-1 Supplement (U+0080–U+00FF).
Yes. Use Ô (capital O). Numeric forms Ô and Ô also work. Note: ô (lowercase) is a different letter (ô).
No. Ô is U+00D4 (Ô, capital circumflex). ô is U+00F4 (ô). Ó is U+00D3 (Ó, acute).
Use it for French, Portuguese, Vietnamese, and other orthographies that need Ô — not as a substitute for plain O, Ó, or Ò.
HTML entities (Ô, Ô, or Ô) go in markup. The CSS escape \00D4 goes in stylesheet strings (usually content on ::before/::after).
🤔
Did you know?
Uppercase O circumflex is Unicode U+00D4 (decimal 212) — glyph Ô in Latin-1 Supplement (U+0080–U+00FF). HTML5 names it Ô (capital O). Official name: LATIN CAPITAL LETTER O WITH CIRCUMFLEX. Lowercase is ô (ô, U+00F4). Common in French, Portuguese, and Vietnamese. Do not confuse with acute Ó (Ó) or grave Ò (Ò).
