HTML Entity for Left Arrow Through Subset (⥺)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+297A

What You'll Learn

How to display the Left Arrow Through Subset (⥺) in HTML using hexadecimal, decimal, and CSS escape methods. This symbol is U+297A (LEFTWARDS ARROW THROUGH SUBSET) in the Supplemental Arrows-B block (U+2900–U+297F)—a leftwards arrow through a subset sign, used in set theory, mathematical notation, and technical content.

Render it with ⥺, ⥺, or CSS \297A. There is no named HTML entity. Related: U+297B (⥻, right arrow through superset), U+2977 (⥷, left arrow through less-than).

⚡ Quick Reference — Left Arrow Through Subset

Unicode U+297A

Supplemental Arrows-B

Hex Code ⥺

Hexadecimal reference

HTML Code ⥺

Decimal reference

Named Entity

Use numeric codes only

Reference Table
Name           Value
────────────   ──────────
Unicode        U+297A
Hex code       ⥺
HTML code      ⥺
Named entity   (none)
CSS code       \297A
Meaning        Leftwards arrow through subset sign
Related        U+297B = right arrow through superset (⥻)
               U+2977 = left arrow through less-than (⥷)
1

Complete HTML Example

A simple example showing the Left Arrow Through Subset (⥺) using hexadecimal code, decimal HTML code, and a CSS content escape. There is no named HTML entity:

html
<!DOCTYPE html>
<html>
<head>
 <style>
  #point:after{
   content: "\297A";
  }
 </style>
</head>
<body>
<p>Symbol using Hexadecimal: &#x297A;</p>
<p>Symbol using HTML Code: &#10618;</p>
<p id="point">Symbol using CSS Entity: </p>
</body>
</html>
Try it Yourself

🌐 Browser Support

The Left Arrow Through Subset (⥺) renders in modern browsers when the font includes Supplemental Arrows-B glyphs:

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

👀 Live Preview

See the Left Arrow Through Subset (⥺) in set theory and math contexts:

Subset relation A ⥺ B
Set theory S ⥺ T (inclusion)
Type / subtyping Type A ⥺ Type B
Large glyph
Arrow comparison ⥺ ⥻ ⥷ ⊂
Numeric refs &#x297A; &#10618; \297A

🧠 How It Works

1

Hexadecimal Code

&#x297A; uses the Unicode hexadecimal value 297A to display the left arrow through subset. The x prefix indicates hexadecimal format.

HTML markup
2

Decimal HTML Code

&#10618; uses the decimal Unicode value 10618 to display the same character.

HTML markup
3

CSS Entity

\297A is used in CSS stylesheets in the content property of pseudo-elements like ::after for set theory and math notation.

CSS stylesheet
=

Same visual result

All three methods produce . Unicode U+297A is in Supplemental Arrows-B. Next: Left Arrow To Bar.

Use Cases

The Left Arrow Through Subset (⥺) is commonly used in:

📐 Set theory

Subset relations, inclusion, or set-theoretic notation in math content.

🔢 Math notation

Equations, proofs, or notation that use left-arrow-through-subset.

📄 Documentation

Specifications, logic, or formal notation that uses this composite arrow.

📊 Diagrams

Indicate subset or inclusion relation in formal diagrams and proofs.

💻 Type theory

Type relations or subtyping notation in programming documentation and code.

🗃 Reference

Character sets, symbol lists, or Unicode reference content.

💡 Best Practices

Do

  • Pair ⥺ with text or aria-label (e.g., “left arrow through subset”) for accessibility
  • Use &#10618; or &#x297A; in HTML—no named entity exists
  • Use fonts that support Supplemental Arrows-B (U+297A)
  • Set <meta charset="utf-8">
  • Keep one numeric style (hex or decimal) per project
  • Test glyph rendering across browsers and fonts

Don’t

  • Expect a named HTML entity for U+297A
  • Use CSS \297A inside HTML text nodes
  • Confuse ⥺ with ⥻ (right arrow through superset)
  • Confuse ⥺ with ⊂ (subset / &sub;)
  • Assume legacy systems render Supplemental Arrows-B without testing

Key Takeaways

1

Two HTML numeric references plus CSS for U+297A

&#x297A; &#10618;
2

For CSS, use \297A in the content property

3

Unicode U+297A — LEFTWARDS ARROW THROUGH SUBSET

4

Supplemental Arrows-B block (U+2900–U+297F) — no named entity

❓ Frequently Asked Questions

Use &#x297A; (hex), &#10618; (decimal), or \297A in CSS content. There is no named entity. All three methods render ⥺ correctly.
U+297A (LEFTWARDS ARROW THROUGH SUBSET). Supplemental Arrows-B block (U+2900–U+297F). Hex 297A, decimal 10618. A leftwards arrow through a subset sign.
In set theory, mathematical notation, technical documentation, diagrams, and any content that requires a left-arrow-through-subset symbol.
HTML references (&#10618; or &#x297A;) go in markup. The CSS escape \297A is used in stylesheets, typically on ::before or ::after. Both produce ⥺.
Named entities cover common characters; arrow symbols with modifiers like the through-subset (U+297A) in Supplemental Arrows-B use numeric hex (&#x297A;) or decimal (&#10618;) codes. That is standard for such symbols in HTML.

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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
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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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