Uppercase O acute (Ó) is the Unicode character at U+00D3 in Latin-1 Supplement. Official name: LATIN CAPITAL LETTER O WITH ACUTE — a capital O with an acute accent (´), common in Spanish, Portuguese, and Irish.
Remember
Character Ó
Unicode U+00D3
Named entity Ó (capital O)
Hex entity Ó
Decimal Ó
CSS escape \00D3
Not the same ó · Ò · Ô
Prefer Ó in HTML markup — the capital O in the name matters. Numeric forms and typing Ó in UTF-8 also work. For the lowercase letter, use ó (ó).
Using Named Entity: Ó
Using Hex Code: Ó
Using HTML Code: Ó
Using CSS Entity: Ó
Typed directly: Ó
Word: ÓPERA
How It Works
1. Named:Ó (capital O) is the clearest HTML form for U+00D3. Lowercase ó is a different character (ó).
2. Hex:U+00D3 → Ó in HTML. Same glyph as the named entity.
3. Decimal: same code point as 211 → Ó. Same glyph as hex and named.
4. CSS: use \00D3 in content (not an HTML entity). #point::after appends that Ó after the paragraph text.
5. Typed / word: paste Ó in UTF-8, or build Spanish words like ÓPERA with lang="es".
Pitfalls & Tips
Common mistakes when working with U+00D3.
Case
Ó ≠ ó
Ó → Ó (capital). ó → ó (lowercase). Entity names are case-sensitive.
vs Ò
Not a grave
Ò (Ò) is O with grave. Acute Ó and grave Ò are different letters.
vs Ô
Not a circumflex
Ô (Ô) is O with circumflex. Do not swap acute and circumflex.
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
\00D3 belongs in CSS strings. Ó / Ó / Ó belong in HTML.
A11y
Use real language context
When Ó appears in Spanish or Portuguese words, keep surrounding text and lang accurate so screen readers get useful context.
Compatibility
Browser Support
Uppercase O acute (U+00D3) and its entity forms (Ó, Ó, Ó, CSS \\00D3) are supported in all mainstream browsers. Latin-1 glyphs are widely available in system fonts.
✓ Universal support
Uppercase O Acute (Ó)
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+00D3 / ÓFull support
Bottom line: Prefer Ó (capital O) in HTML. Use \\00D3 only inside CSS content. Do not confuse with ó (ó), grave Ò, or circumflex Ô.
Remember
Key Takeaways
Unicode: uppercase O acute is U+00D3 (decimal 211) — glyph Ó.
HTML: prefer Ó (capital O) — also Ó / Ó.
CSS: use \00D3 inside content for generated text.
Meaning:Ó is capital acute — not ó (ó), not Ò (grave), not Ô (circumflex).
Use Ó (named), Ó (hex), Ó (decimal), type Ó directly in UTF-8, or the CSS escape \00D3 in content. Prefer Ó in normal HTML.
U+00D3 (LATIN CAPITAL LETTER O WITH ACUTE). Hex D3, decimal 211. It belongs to Latin-1 Supplement (U+0080–U+00FF).
Yes. Use Ó (capital O). Numeric forms Ó and Ó also work. Note: ó (lowercase) is a different letter (ó).
No. Ó is U+00D3 (Ó, capital acute). ó is U+00F3 (ó). Ò is U+00D2 (Ò, grave).
Use it for Spanish, Portuguese, Irish, and other orthographies that need Ó — not as a substitute for plain O, Ò, or Ô.
HTML entities (Ó, Ó, or Ó) go in markup. The CSS escape \00D3 goes in stylesheet strings (usually content on ::before/::after).
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Did you know?
Uppercase O acute is Unicode U+00D3 (decimal 211) — glyph Ó in Latin-1 Supplement (U+0080–U+00FF). HTML5 names it Ó (capital O). Official name: LATIN CAPITAL LETTER O WITH ACUTE. Lowercase is ó (ó, U+00F3). Common in Spanish, Portuguese, and Irish. Do not confuse with grave Ò (Ò) or circumflex Ô (Ô).
