Warning Sign (⚠) is the Miscellaneous Symbols character at Unicode U+26A0 (WARNING SIGN). HTML5 has no named entity — use hex or decimal. Use it for caution and alert messaging in text.
Remember
Character ⚠
Unicode U+26A0
Named entity (none)
Hex entity ⚠
Decimal ⚠
CSS escape \26A0
Not the same ⚡ · ! · emoji variants
Hex, decimal, CSS, and a typed character all produce the same code point: ⚠. Prefer ⚠ or ⚠ in HTML markup. Always pair the symbol with clear text so the warning is understandable without relying on the glyph alone.
Reference
Quick Reference
One table for every form you will actually use.
Form
Code
Where it goes
Named entity
None
Use numeric or type the character
Hex entity
⚠
HTML markup (preferred)
Decimal entity
⚠
HTML markup
CSS escape
\26A0
Stylesheet content (4 hex digits)
Direct character
⚠
UTF-8 HTML text
When to Use Which
Situation
Use
Caution / warning in text
⚠ or type ⚠
Numeric-only markup
⚠ or ⚠
Generated text via ::before / ::after
content: "\26A0"
High voltage symbol
Use U+26A1 (⚡) — different character
Plain emphasis only
Type ! (U+0021) — not a warning triangle
See it
Live Preview
⚠ in a short alert and beside look-alikes.
Inline⚠ Caution: check your input
Large glyph⚠
Hex entity⚠ → ⚠
vs look-alikes⚠ | ⚡ | !
With entitiesHex: ⚠ | Decimal: ⚠
Code
Complete HTML Example
One page that shows Warning Sign with hex, decimal, CSS escape, and a typed character. Use View Output or open the live editor.
Hex + Decimal + CSS + Typed
Four ways to display ⚠ in HTML and CSS. No named entity exists.
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Warning Sign (⚠)</title>
<style>
#point::after {
content: "\26A0";
}
</style>
</head>
<body>
<p>Built with Hex: ⚠</p>
<p>Built with Decimal: ⚠</p>
<p id="point">Built with CSS: </p>
<p>Typed: ⚠</p>
<p role="status">⚠ Caution: save your work</p>
</body>
</html>
Built with Hex: ⚠
Built with Decimal: ⚠
Built with CSS: ⚠
Typed: ⚠
⚠ Caution: save your work
How It Works
1. Hex / decimal:U+26A0 → ⚠ or ⚠. The browser turns either into ⚠.
2. Typed: in a UTF-8 document you can paste ⚠ directly — same code point, no entity.
3. CSS: use \26A0 in content (four hex digits; not an HTML entity). #point::after appends that ⚠ after the paragraph text.
4. Accessibility: keep a text label next to the symbol. Decorative-only use should be marked appropriately so screen readers are not left with an unclear character.
Pitfalls & Tips
Common mistakes when working with Warning Sign.
Named
There is no &warning;
HTML5 does not define a named entity for U+26A0. Use ⚠ or ⚠.
A11y
Do not rely on the glyph alone
Include readable text such as “Warning” or “Caution” so the message is clear to everyone.
Look-alike
Not high voltage
U+26A1 (⚡) is a different symbol. Use U+26A0 only for the triangular warning sign.
Fonts
Text vs emoji style
Some platforms render U+26A0 as emoji-style. Appearance depends on font and OS.
CSS vs HTML
Do not mix escapes
\26A0 belongs in CSS strings. ⚠ / ⚠ belong in HTML.
Encoding
Declare UTF-8
If you type ⚠ directly, keep <meta charset="UTF-8"> so the file is not misread.
Compatibility
Browser Support
Warning Sign (U+26A0) and its entity forms (⚠, ⚠, CSS \\26A0) are supported in all mainstream browsers when the page is UTF-8 and the font covers Miscellaneous Symbols / emoji.
✓ Universal support
Warning Sign (⚠)
Encode with hex, decimal, CSS escape, or type the character — same Unicode code point everywhere. No named entity.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerIE 9+
Yes*
U+26A0Full support
Bottom line: Prefer ⚠ in HTML text. Use ⚠ as an equivalent, and \\26A0 only inside CSS content. Glyph display depends on font coverage.
Remember
Key Takeaways
Unicode: this symbol is U+26A0 (decimal 9888) — glyph ⚠.
HTML: prefer ⚠ — also ⚠. No named entity.
CSS: use \26A0 inside content for generated text.
Watch out: ⚠ ≠ ⚡ ≠ ! — and always include text with the symbol.
One line:U+26A0 → ⚠ / ⚠ / CSS \26A0 (no named entity).
Frequently Asked Questions
Use ⚠ (hex), ⚠ (decimal), type ⚠ directly in UTF-8, or the CSS escape \26A0 in the content property. There is no named HTML entity. Prefer ⚠ for readable markup.
U+26A0 (WARNING SIGN). Hex 26A0, decimal 9888. It belongs to Miscellaneous Symbols (U+2600–U+26FF).
No. HTML5 does not define &warning; or any other named form. Use numeric references ⚠ or ⚠, or type ⚠ in UTF-8.
U+26A0 is the triangular warning / caution sign. U+26A1 is high voltage (⚡). A plain ! is U+0021 — not a warning triangle.
Use it for caution labels, alert banners, and safety messaging when a text character is enough. Pair it with clear wording for accessibility.
HTML entities (⚠ or ⚠) go in markup. The CSS escape \26A0 is used in stylesheets (usually in the content property of ::before/::after). Prefer four hex digits in CSS.
🤔
Did you know?
Warning Sign is Unicode U+26A0 (decimal 9888) — glyph ⚠ (WARNING SIGN) in Miscellaneous Symbols. HTML5 has no named entity — use ⚠ or ⚠. Use it for caution / alert UI. Do not confuse it with high voltage (U+26A1), a plain exclamation mark, or emoji presentation variants that append a variation selector.
