Up down white arrow (⇳) is the Unicode character at U+21F3 in Arrows. Official name: UP DOWN WHITE ARROW — an outlined (hollow) bidirectional vertical arrow used for scroll, resize, and UI navigation cues.
Remember
Character ⇳
Unicode U+21F3
Named entity (none)
Hex entity ⇳
Decimal ⇳
CSS escape \21F3
Not the same ↕ · ⇕ · ⇧
Prefer ⇳ or ⇳ in HTML markup. You can also type ⇳ in UTF-8. For a filled single up-down arrow, use ↕ (↕); for a double stroke, use ⇕ (⇕).
Using Hex Code: ⇳
Using HTML Code: ⇳
Using CSS Entity: ⇳
Typed directly: ⇳
Label: Scroll ⇳
How It Works
1. Hex:U+21F3 → ⇳ in HTML. Preferred numeric form when you need an entity.
2. Decimal: same code point as 8691 → ⇳. Same glyph as hex.
3. CSS: use \21F3 in content (not an HTML entity). #point::after appends that ⇳ after the paragraph text.
4. Typed / label: paste ⇳ in UTF-8, or write Scroll ⇳ for a short UI label.
5. No named entity: HTML5 does not define a name for U+21F3 — use numeric references or type the character.
Pitfalls & Tips
Common mistakes when working with U+21F3.
vs ↕
Not the filled single arrow
↕ (↕) is the common filled up-down arrow. ⇳ is the outlined “white” form — pick the style that matches your UI.
vs ⇕
Not the double arrow
⇕ (⇕) has a thick double stroke. ⇳ is a single outlined shaft with heads both ways.
Named
No named HTML entity
There is no &varrw; (or similar) for U+21F3. Use ⇳ or ⇳.
Fonts
Needs Arrows coverage
Some UI fonts omit white arrows. Prefer a stack that includes a symbols font if the glyph must always show.
CSS vs HTML
Do not mix escapes
\21F3 belongs in CSS strings. ⇳ / ⇳ belong in HTML.
A11y
Name the action in context
Screen readers may announce this unevenly. Prefer nearby plain-language text such as “scroll” or “resize vertically” when the arrow carries meaning.
Compatibility
Browser Support
Up down white arrow (U+21F3) and its entity forms (⇳, ⇳, CSS \\21F3) are supported in all mainstream browsers. Visible glyphs depend on Arrows font coverage.
✓ Universal support
Up Down White Arrow (⇳)
Encode with hex, decimal, CSS escape, or type the character — same code point everywhere encoding is supported.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerAll versions
Yes
U+21F3 / entitiesFull support
Bottom line: Prefer ⇳ or ⇳ in HTML. Use \\21F3 only inside CSS content. There is no named entity.
Remember
Key Takeaways
Unicode: up down white arrow is U+21F3 (decimal 8691) — glyph ⇳.
HTML: no named entity — use ⇳ / ⇳ / type ⇳.
CSS: use \21F3 inside content for generated text.
Meaning:⇳ is outlined bidirectional — not ↕ (↕), not ⇕ (⇕).
One line:U+21F3 → ⇳ / ⇳ / CSS \21F3 (no named entity).
Frequently Asked Questions
Use ⇳ (hex), ⇳ (decimal), type ⇳ directly in UTF-8, or the CSS escape \21F3 in content. There is no named HTML entity.
U+21F3 (UP DOWN WHITE ARROW). Hex 21F3, decimal 8691. It belongs to Arrows (U+2190–U+21FF).
No. Use numeric references ⇳ or ⇳, or type ⇳ in UTF-8.
No. ⇳ is U+21F3 (white/outlined). ↕ is U+2195 (↕, filled single). ⇕ is U+21D5 (⇕, double).
Use it for outlined bidirectional vertical cues — scroll, resize, or UI icons — especially when a hollow style fits the design better than filled ↕.
HTML entities (⇳ or ⇳) go in markup. The CSS escape \21F3 goes in stylesheet strings (usually content on ::before/::after).
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Did you know?
Up down white arrow is Unicode U+21F3 (decimal 8691) — glyph ⇳ in Arrows (U+2190–U+21FF). Official name: UP DOWN WHITE ARROW (outlined / hollow bidirectional vertical arrow). HTML5 has no named entity — use ⇳ or ⇳. Do not confuse with filled U+2195 (↕, ↕) or double U+21D5 (⇕, ⇕).
