Trigram Thunder (☳) is the Miscellaneous Symbols character at Unicode U+2633 (TRIGRAM FOR THUNDER). It is the I Ching (Yijing) Zhen trigram — three lines representing the thunder element.
Remember
Character ☳
Unicode U+2633
Hex entity ☳
Decimal ☳
Named entity (none)
CSS escape \2633
Not the same ☲ (fire) · ☵ (water) · ☯ (yin yang)
Hex, decimal, CSS, and a typed character all produce the same glyph: ☳. Prefer ☳ when you want an explicit entity. For the next trigram in this sequence, see Trigram Water (U+2635).
Using Hex Code: ☳
Using HTML Code: ☳
Using CSS Entity: ☳
☳ Thunder (Zhen) trigram
How It Works
1. Hex:U+2633 → ☳ in HTML. The browser turns it into ☳.
2. Decimal: same code point as 9779 → ☳. Same result as hex.
3. Named: HTML5 does not define a named entity for this character — use hex or decimal instead.
4. CSS: use \2633 in content (not an HTML entity). #point::after appends that ☳ after the paragraph text.
Pitfalls & Tips
Common mistakes when working with Trigram Thunder.
Look-alikes
☳ ≠ ☲ ≠ ☯
U+2633 is thunder (Zhen). Fire and yin yang are different characters — do not mix them when naming I Ching symbols.
Named
No &…; name
Do not invent a name. Use ☳ or ☳.
A11y
Label the trigram
A lone ☳ may be unclear. Add text like “Thunder trigram” or an accessible name for screen readers.
Fonts
Glyph coverage
Miscellaneous Symbols coverage varies. Test I Ching UIs on mobile and provide a fallback if ☳ is missing.
CSS vs HTML
Do not mix escapes
\2633 belongs in CSS. ☳ / ☳ belong in HTML.
Semicolon
End references
Always finish with ; — write ☳, not ☳.
Compatibility
Browser Support
Trigram Thunder (U+2633) and its entity forms (☳, ☳, CSS \\2633) are supported in all modern browsers. Glyph coverage depends on the font.
✓ Universal encoding
Trigram Thunder (☳)
Encode with hex, decimal, or CSS escape — or type ☳ directly in UTF-8 HTML. 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+2633Full support
Bottom line: Prefer ☳ for readable HTML. Use \\2633 only inside CSS content. Label cultural symbols for accessibility.
Remember
Key Takeaways
Unicode: this symbol is U+2633 (decimal 9779) — trigram for thunder (Zhen).
HTML: prefer ☳ — or use ☳. No named entity.
CSS: use \2633 inside content for generated trigram markers.
Watch out: not the same as fire (U+2632) or yin yang (U+262F).
One line:U+2633 → ☳ / ☳ / CSS \2633 (no named entity).
Frequently Asked Questions
Use ☳ (hex), ☳ (decimal), or the CSS escape \2633 in the content property. All render ☳ when the font supports Miscellaneous Symbols. There is no named HTML entity.
U+2633 (TRIGRAM FOR THUNDER). Hex 2633, decimal 9779. It belongs to Miscellaneous Symbols (U+2600–U+26FF). It is the I Ching Zhen trigram.
No. HTML5 does not define a named entity for U+2633. Use numeric references like ☳ or ☳.
Use it for I Ching content, Taoist or Chinese philosophy pages, cultural design, and educational material on trigrams. Pair the glyph with visible text (e.g. “Thunder trigram”) for accessibility.
U+2633 is TRIGRAM FOR THUNDER (Zhen). U+2632 is TRIGRAM FOR FIRE. U+262F is YIN YANG (taijitu). Related cultural symbols, different characters.
HTML entities (☳ or ☳) go in markup. The CSS escape \2633 is used in stylesheets (usually in the content property of ::before/::after). Both render ☳.
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Did you know?
Trigram Thunder is Unicode U+2633 (decimal 9779) — TRIGRAM FOR THUNDER (Zhen) in Miscellaneous Symbols. HTML5 has no named entity — use ☳ or ☳. One of the eight I Ching (Yijing) trigrams. Do not confuse it with Trigram Fire (U+2632) or yin yang (U+262F).
