Uppercase U Breve (Ŭ) is the Latin Extended-A character at Unicode U+016C (LATIN CAPITAL LETTER U WITH BREVE). HTML5 names it Ŭ. Use it for Esperanto and other Latin-script text that needs Ŭ.
Remember
Character Ŭ
Unicode U+016C
Named entity Ŭ
Hex entity Ŭ
Decimal Ŭ
CSS escape \016C
Not the same ŭ (ŭ) · U · Û · inverted breve
Named, hex, decimal, CSS, and a typed character all produce the same glyph: Ŭ. Prefer Ŭ or Ŭ in HTML markup. For the lowercase form see ŭ; for U with circumflex see uppercase U circumflex.
Use U+016C instead of U + combining breve (U+0306) when the precomposed form is available.
CSS vs HTML
Do not mix escapes
\016C belongs in CSS strings. Ŭ / Ŭ / Ŭ belong in HTML.
Compatibility
Browser Support
Uppercase U Breve (U+016C) and its entity forms (Ŭ, Ŭ, Ŭ, CSS \\016C) are supported in all mainstream browsers when the page is UTF-8 and the font covers Latin Extended-A.
✓ Universal support
Uppercase U Breve (Ŭ)
Encode with named, hex, decimal, CSS escape, or type the character — same Unicode code point everywhere.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerAll versions
Yes
U+016C / ŬFull support
Bottom line: Prefer Ŭ in HTML text. Use Ŭ / Ŭ as equivalents, and \\016C only inside CSS content. Glyph display depends on font coverage.
Remember
Key Takeaways
Unicode: this letter is U+016C (decimal 364) — glyph Ŭ.
Use Ŭ (named), Ŭ (hex), Ŭ (decimal), or the CSS escape \016C in the content property. All render Ŭ. Prefer Ŭ or Ŭ for readable markup.
U+016C (LATIN CAPITAL LETTER U WITH BREVE). Hex 016C, decimal 364, named entity Ŭ. It belongs to Latin Extended-A (U+0100–U+017F).
Yes. HTML5 defines Ŭ for U+016C. It is case-sensitive — write Ubreve with a capital U. Lowercase ŭ is a different character (ŭ).
U+016C (Ŭ) is capital U with a breve (˘). U+0055 is plain U. U+00DB (Û) uses a circumflex (ˆ) — a different accent.
Use it for Esperanto and other Latin-script text that needs capital U with breve (for example titles and all-caps headings that include Ŭ).
HTML entities (Ŭ, Ŭ, or Ŭ) go in markup. The CSS escape \016C is used in stylesheets (usually in the content property of ::before/::after). Both render Ŭ.
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Did you know?
Uppercase U Breve is Unicode U+016C (decimal 364) — glyph Ŭ (LATIN CAPITAL LETTER U WITH BREVE) in Latin Extended-A. HTML5 names it Ŭ (case-sensitive — capital U). Prefer it for Esperanto and linguistic text that needs Ŭ. Do not confuse it with lowercase ŭ (ŭ), plain U, circumflex Û (Û), or inverted breve (U+0216).