HTML Entity for Left Harpoon Barb Up (↼)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+21BC

What You'll Learn

How to display the Left Harpoon Barb Up (↼) in HTML using the named entity, hexadecimal, decimal, and CSS escape methods. This symbol is U+21BC (LEFTWARDS HARPOON WITH BARB UPWARDS) in the Arrows block (U+2190–U+21FF)—a left-pointing harpoon with the barb facing up, used in mathematical notation, logic, commutative diagrams, and directional indicators.

Render it with ↼ (named), ↼, ↼, or CSS \21BC. Related: U+21BD (↽, left harpoon barb down / ↽), U+2190 (←, simple left arrow / ←).

⚡ Quick Reference — Left Harpoon Barb Up

Unicode U+21BC

Arrows block

Hex Code ↼

Hexadecimal reference

HTML Code ↼

Decimal reference

Named Entity ↼

Most readable option

Reference Table
Name           Value
────────────   ──────────
Unicode        U+21BC
Hex code       ↼
HTML code      ↼
Named entity   ↼
CSS code       \21BC
Meaning        Leftwards harpoon with barb up
Related        U+21BD = left harpoon barb down (↽)
               U+2190 = left arrow (←)
1

Complete HTML Example

A simple example showing the Left Harpoon Barb Up (↼) using the named entity, hexadecimal code, decimal HTML code, and a CSS content escape:

html
<!DOCTYPE html>
<html>
<head>
 <style>
  #point:after{
   content: "\21BC";
  }
 </style>
</head>
<body>
<p>Symbol using Hexadecimal: &#x21BC;</p>
<p>Symbol using HTML Code: &#8636;</p>
<p>Symbol using HTML Entity: &lharu;</p>
<p id="point">Symbol using CSS Entity: </p>
</body>
</html>
Try it Yourself

🌐 Browser Support

The Left Harpoon Barb Up (↼) renders in modern browsers when the font includes Arrows block glyphs:

Chrome 1+
Firefox 1+
Safari 1+
Edge 12+
Opera 4+
Android 4.4+
iOS Safari 1+

👀 Live Preview

See the Left Harpoon Barb Up (↼) in math and logic contexts:

Math notation f ↼ g
Commutative diagram A ↼ B
Flow diagram Step 1 ↼ Step 2
Large glyph
Harpoon comparison ↼ ↽ ← ⇐
Entity refs &lharu; &#x21BC; &#8636; \21BC

🧠 How It Works

1

Named HTML Entity

&lharu; is the named entity for the Left Harpoon Barb Up (leftwards harpoon with barb upwards). Easy to read in math and logic markup.

HTML markup
2

Hexadecimal Code

&#x21BC; uses the Unicode hexadecimal value 21BC. The x prefix indicates hexadecimal format.

HTML markup
3

Decimal HTML Code

&#8636; uses the decimal Unicode value 8636 for the same symbol.

HTML markup
4

CSS Entity

\21BC is used in CSS stylesheets in the content property of pseudo-elements like ::after.

CSS stylesheet
=

Same visual result

All four methods produce . Unicode U+21BC is in the Arrows block. Previous: Left Harpoon Barb Down To Bar.

Use Cases

The Left Harpoon Barb Up (↼) is commonly used in:

📐 Mathematics

Harpoon notation in math, logic, and scientific documents.

📜 Logic & category theory

Commutative diagrams and formal proofs with harpoon arrows.

📊 Flow diagrams

Show direction or relationships with harpoon-style arrows.

📚 Technical docs

Illustrate specialized arrow symbols in guides and reference material.

🎯 Direction

Decorative or functional left harpoon in buttons, labels, and icons.

🗃 Entity reference

Document and teach HTML entity usage for Arrows block symbols.

💡 Best Practices

Do

  • Prefer &lharu; in HTML for readability
  • Use fonts that support the Arrows block (U+21BC)
  • Set <meta charset="utf-8">
  • Pair ↼ with context (math, logic) so meaning is clear
  • Keep one encoding style per project for consistency
  • Distinguish ↼ from ↽ when barb up vs barb down matters

Don’t

  • Confuse &lharu; (U+21BC) with &lhard; (U+21BD, barb down)
  • Confuse &lharu; with &larr; (U+2190, simple left arrow)
  • Use CSS \21BC inside HTML text nodes
  • Assume all fonts render harpoon glyphs identically
  • Mix named and numeric entities inconsistently in the same component

Key Takeaways

1

Four ways to render U+21BC in HTML and CSS

&lharu; &#x21BC; &#8636;
2

For CSS, use \21BC in the content property

3

Unicode U+21BC — LEFTWARDS HARPOON WITH BARB UPWARDS

4

Arrows block (U+2190–U+21FF) — named entity &lharu;

❓ Frequently Asked Questions

Use &lharu; (named), &#x21BC; (hex), &#8636; (decimal), or \21BC in CSS content. All four methods render ↼ correctly.
U+21BC (LEFTWARDS HARPOON WITH BARB UPWARDS). Arrows block (U+2190–U+21FF). Hex 21BC, decimal 8636. A left-pointing harpoon with the barb facing up.
In mathematical notation, logic, commutative diagrams, technical writing, and any design that needs a leftwards harpoon with barb up.
Named and numeric HTML references (&lharu;, &#8636;, &#x21BC;) go in markup. The CSS escape \21BC is used in stylesheets, typically on ::before or ::after. Both produce ↼.
Yes. &lharu; is the named HTML entity for U+21BC. You can also use &#8636; (decimal) or &#x21BC; (hex) and \21BC in CSS.

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About the author

Mari Selvan M P
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.

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