HTML Entity for Left Right Double Arrow Stroke (⇎)
What You'll Learn
How to display the Left Right Double Arrow Stroke (⇎) in HTML using the named entity, hexadecimal, decimal, and CSS escape methods. This symbol is U+21CE (LEFT RIGHT DOUBLE ARROW WITH STROKE) in the Arrows block (U+2190–U+21FF)—a left-right double arrow with a vertical stroke through it, often used to mean “not equivalent” or negation of the bidirectional double arrow (⇔) in logic and set theory.
Render it with ⇎ (named), ⇎, ⇎, or CSS \21CE. Do not confuse ⇎ with U+21D4 (⇔, equivalence / ⇔) or U+21AE (↮, single double arrow stroke / ↮).
⚡ Quick Reference — Left Right Double Arrow Stroke
U+21CEArrows block
⇎Hexadecimal reference
⇎Decimal reference
⇎Most readable option
Name Value
──────────── ──────────
Unicode U+21CE
Hex code ⇎
HTML code ⇎
Named entity ⇎
CSS code \21CE
Meaning Left right double arrow with stroke (not equivalent)
Related U+21D4 = left right double arrow (⇔)
U+21AE = left right arrow stroke (↮)Complete HTML Example
A simple example showing the Left Right Double Arrow Stroke (⇎) using the named entity, hexadecimal code, decimal HTML code, and a CSS content escape:
<!DOCTYPE html>
<html>
<head>
<style>
#point:after{
content: "\21CE";
}
</style>
</head>
<body>
<p>Arrow (hex): ⇎</p>
<p>Arrow (decimal): ⇎</p>
<p>Arrow (named): ⇎</p>
<p id="point">Arrow (CSS): </p>
</body>
</html>🌐 Browser Support
The Left Right Double Arrow Stroke (⇎) is universally supported in all modern browsers when the font includes Arrows block glyphs:
👀 Live Preview
See the Left Right Double Arrow Stroke (⇎) rendered live in different contexts:
🧠 How It Works
Hexadecimal Code
⇎ uses the Unicode hexadecimal value 21CE for the left right double arrow with stroke. The x prefix indicates hexadecimal format.
Decimal HTML Code
⇎ uses the decimal Unicode value 8654 to display the same character.
Named Entity
⇎ is the semantic named entity — the easiest to read in source HTML and the most self-descriptive option.
CSS Entity
\21CE is used in CSS stylesheets in the content property of pseudo-elements like ::after.
Same visual result
All four methods produce ⇎. Unicode U+21CE is in the Arrows block. Previous: Left Right Double Arrow.
Use Cases
The Left Right Double Arrow Stroke (⇎) is commonly used in:
Indicate that logical equivalence does not hold (e.g. A ⇎ B).
Denote “not iff” or negation of bidirectional implication.
Show that two items are not equivalent or not bidirectionally linked.
Express that a two-way relation is explicitly negated.
Use in papers for “not equivalent” or negation of ⇔.
Mark relations that are explicitly not bidirectional equivalence.
💡 Best Practices
Do
- Use
⇎for readable source markup - Add
aria-labelor surrounding text for accessibility - Verify your font supports the Arrows block (U+21CE)
- Keep one entity style per project for consistency
- Contrast with ⇔ when explaining negation of equivalence
Don’t
- Confuse ⇎ (not equivalent) with ⇔ (equivalence)
- Use CSS
\21CEinside HTML text nodes - Assume all fonts render the stroked double arrow identically
- Mix entity styles randomly in one file
- Use the symbol without explaining its negation meaning on first use
Key Takeaways
Three HTML references plus CSS all render ⇎
⇎ ⇎ ⇎For CSS, use \21CE in the content property
Unicode U+21CE — LEFT RIGHT DOUBLE ARROW WITH STROKE
Prefer ⇎ for readability—it’s the named HTML entity
Previous: Left Right Double Arrow Next: Left Right Double Arrow Vertical Stroke
❓ Frequently Asked Questions
⇎ (hex), ⇎ (decimal), ⇎ (named), or \21CE in CSS content. All four methods render ⇎ correctly.U+21CE (LEFT RIGHT DOUBLE ARROW WITH STROKE). Arrows block (U+2190–U+21FF). Hex 21CE, decimal 8654. Used for a left-right double arrow with a vertical stroke, often meaning not equivalent or negation.⇎, ⇎, or ⇎) go in markup. The CSS escape \21CE is used in stylesheets, typically on ::before or ::after. Both produce ⇎.⇎ is the named HTML entity for U+21CE. You can also use ⇎ (decimal) or ⇎ (hex) and \21CE in CSS.Explore More HTML Entities!
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