HTML Entity for Uppercase Y Acute (Ý)

Beginner

5 min read

Updated: Sep 2026

1 example

Unicode U+00DD

HTML Entity for uppercase Y acute (U+00DD) tutorial illustration

Definition

What Is Uppercase Y Acute?

Uppercase Y acute (Ý) is the Unicode character at U+00DD in Latin-1 Supplement. Official name: LATIN CAPITAL LETTER Y WITH ACUTE — a capital Y with an acute accent (´) above, used in Icelandic, Faroese, and Czech.

Remember

Character     Ý
Unicode       U+00DD
Named entity  &Yacute;  (capital Y)
Hex entity    &#xDD;
Decimal       &#221;
CSS escape    \00DD
Not the same  ý · Y · Ŷ

Prefer Ý in HTML markup — the capital Y in the name matters. Numeric forms and typing Ý in UTF-8 also work. For the lowercase letter, use ý (ý).

Reference

Quick Reference

One table for every form you will actually use.

Form	Code	Where it goes
Named entity	`Ý`	HTML markup (preferred)
Direct character	`Ý`	HTML text (UTF-8)
Hex entity	`Ý`	HTML markup
Decimal entity	`Ý`	HTML markup
CSS escape	`\00DD`	Stylesheet `content`
Lowercase (related)	ý (U+00FD)	Named `ý`

When to Use Which

Situation	Use
Capital Y with acute (Ý)	`Ý` or type `Ý`
Lowercase y with acute (ý)	ý (`ý`)
Capital Y with circumflex (Ŷ)	Ŷ (`&Ycirc;`)
Plain capital Y	Y (U+0059)
Generated text via `::before` / `::after`	`content: "\00DD"`

See it

Live Preview

Uppercase Y acute rendered alone and next to related letters.

Large glyph Ý

Notation ÝLIR

Compared Ý | ý | Y

Hint Compare: Acute Ý | Lower ý | Plain Y | Circumflex Ŷ

With entities Named: Ý | Hex: Ý | Decimal: Ý

Code

Complete HTML Example

One page that shows the letter 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 produce Ý, plus a short Icelandic word example.

html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Uppercase Y Acute (Ý)</title>
  <style>
    #point::after {
      content: "\00DD";
    }
  </style>
</head>
<body>
  <p>Using Named Entity: &Yacute;</p>
  <p>Using Hex Code: &#xDD;</p>
  <p>Using HTML Code: &#221;</p>
  <p id="point">Using CSS Entity: </p>
  <p>Typed directly: Ý</p>
  <p lang="is">Word: &Yacute;LIR</p>
</body>
</html>

Try It Yourself

How It Works

1. Named: Ý (capital Y) is the clearest HTML form for U+00DD. Lowercase ý is a different character (ý).

2. Hex: U+00DD → Ý in HTML. Same glyph as the named entity.

3. Decimal: same code point as 221 → Ý. Same glyph as hex and named.

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

5. Typed / word: paste Ý in UTF-8, or build Icelandic forms like ÝLIR with lang="is".

Pitfalls & Tips

Common mistakes when working with U+00DD.

Case

Ý ≠ ý

Ý → Ý (capital). ý → ý (lowercase). Entity names are case-sensitive.

vs Y

Not plain capital Y

Keyboard Y is U+0059. Use U+00DD only when you need the acute form.

vs Ŷ

Not a circumflex

Ŷ (&Ycirc;) has a circumflex (ˆ). Ý has an acute (´) — different marks.

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

\00DD belongs in CSS strings. Ý / Ý / Ý belong in HTML.

A11y

Use real language context

When Ý appears in Icelandic (or other) words, keep surrounding text and lang accurate (for example is) so screen readers get useful context.

Compatibility

Browser Support

Uppercase Y acute (U+00DD) and its entity forms (Ý, Ý, Ý, CSS \\00DD) are supported in all mainstream browsers. Latin-1 glyphs are universally available in system fonts.

✓ Universal support

Uppercase Y Acute (Ý)

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

100% Browser coverage

Google Chrome Supported

Yes

Microsoft Edge Supported

Yes

Mozilla Firefox Supported

Yes

Apple Safari Supported

Yes

Opera Supported

Yes

Internet Explorer IE 9+

Yes

U+00DD / Ý Full support

Bottom line: Prefer Ý (capital Y) in HTML. Use \\00DD only inside CSS content. Do not confuse with ý (ý), plain Y, or circumflex Ŷ.

Remember

Key Takeaways

Unicode: uppercase Y acute is U+00DD (decimal 221) — glyph Ý.
HTML: prefer Ý (capital Y) — also Ý / Ý.
CSS: use \00DD inside content for generated text.
Meaning: Ý is capital acute — not ý (ý), not plain Y, not Ŷ.

One line: U+00DD → Ý / Ý / Ý / CSS \00DD.

Frequently Asked Questions

How do I display Ý in HTML?

Use Ý (named), Ý (hex), Ý (decimal), type Ý directly in UTF-8, or the CSS escape \00DD in content. Prefer Ý in normal HTML.

What is the Unicode value for uppercase Y acute?

U+00DD (LATIN CAPITAL LETTER Y WITH ACUTE). Hex DD, decimal 221. It belongs to Latin-1 Supplement (U+0080–U+00FF).

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

Yes. Use Ý (capital Y). Numeric forms Ý and Ý also work. Note: ý (lowercase) is a different letter (ý).

Is Ý the same as ý or Y?

No. Ý is U+00DD (Ý, capital acute). ý is U+00FD (ý). Plain Y is U+0059.

When should I use Ý?

Use it for Icelandic, Faroese, Czech, and other orthographies that need capital Ý — not as a substitute for plain Y or Ŷ.

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

HTML entities (Ý, Ý, or Ý) go in markup. The CSS escape \00DD goes in stylesheet strings (usually content on ::before/::after).

Did you know?

Uppercase Y acute is Unicode U+00DD (decimal 221) — glyph Ý in Latin-1 Supplement (U+0080–U+00FF). HTML5 names it Ý (capital Y). Official name: LATIN CAPITAL LETTER Y WITH ACUTE. Lowercase is ý (ý, U+00FD). Common in Icelandic, Faroese, and Czech. Do not confuse with plain Y or Y circumflex Ŷ (&Ycirc;).

Next: Uppercase Y Circumflex

Learn the HTML entity for uppercase Y with circumflex (U+0176).

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.

AWS Certified Developer – Associate (Credly)

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