It is a unicode character: โ–ถ = ▶

http://www.fileformat.info/info/unicode/char/25b6/index.htm

See: What characters can be used for up/down triangle (arrow without stem) for display in HTML?

Answer from Diodeus - James MacFarlane on Stack Overflow
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Toptal
toptal.com โ€บ designers โ€บ htmlarrows โ€บ arrows
HTML Arrow Symbols, Entities and Codes โ€” Toptal Designers
Easily find HTML arrow symbols, entities, characters and codes with ASCII, HEX, CSS and Unicode values; including right arrow, left arrow, up and down arrows.
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Keynote Support
keynotesupport.com โ€บ internet โ€บ special-characters-arrows.shtml
ALT, HTML, Unicode, Hex, and CSS Codes for Arrows
This chart shows HTML codes and Unicodes for arrows with straight and curling shafts, arrows with plain, single, fancy, and double arrowheads, arrows pointing in different directions, and more. ALT Codes, CSS Codes, and Hex codes are easily determined from these codes as shown below . The example below for a teardrop right-facing arrow (โžบ) shows all five codes, and their relationship is easily seen.
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HTML Symbols
htmlsymbols.net โ€บ arrows โ€บ right-arrow
โ†’ Right Arrow HTML Symbol, Unicode, HTML & CSS Code
Find the Right Arrow (โ†’ ) HTML symbol with Unicode, HTML entity, HEX and CSS code. Copy the symbol and codes for use in web pages, documents, and apps.
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W3Schools
w3schools.com โ€บ html โ€บ html_symbols.asp
HTML Symbols
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.
Find elsewhere
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Alt Codes
alt-codes.net โ€บ arrow_alt_codes.php
๐Ÿ’˜โžœโ†“โ†ณโ‡ขโžค๐Ÿน Arrow Symbols: Left, Right, Up and Down Arrow
Lists of arrow symbols, arrow signs, arrow emojis down arrow, up arrow, right and left arrows and all kind of arrows with their Alt Code and Unicode values.
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HTML Symbols
htmlsymbols.xyz โ€บ arrow-symbols
Arrow Symbols - HTML Symbol
The following table shows Unicode symbol, HTML code, CSS code, and official HTML name for the characters categorized under arrow symbols.
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Toptal
toptal.com โ€บ designers โ€บ htmlarrows โ€บ arrows โ€บ right-arrow
Right Arrow HTML Symbol, Character and Entity Codes โ€” HTML Arrows
HTML symbol, character and entity codes, ASCII, CSS and HEX values for Right Arrow, plus a panoply of others.
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ThoughtCo
thoughtco.com โ€บ arrow-symbols-on-web-page-3466516
How to Insert Arrow Symbols on Your Web Page
March 8, 2021 - Code formats: HTML5 = "&Code;" Decimal = "&#Code;" Hexadecimal = "&#XCode;" Type Character Map in the Windows Search bar to identify arrows and their codes in the Character Map.
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MDN Web Docs
developer.mozilla.org โ€บ en-US โ€บ docs โ€บ Web โ€บ JavaScript โ€บ Reference โ€บ Functions โ€บ Arrow_functions
Arrow function expressions - JavaScript | MDN
February 21, 2026 - This is because JavaScript only sees the arrow function as having an expression body if the token following the arrow is not a left brace, so the code inside braces ({}) is parsed as a sequence of statements, where foo is a label, not a key in an object literal.
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DhiWise
dhiwise.com โ€บ post โ€บ the-ultimate-guide-to-using-html-arrows-for-website-navigation
The Ultimate Guide to Using HTML Arrows for Website ...
August 5, 2024 - Arrow characters are the simplest way to represent HTML arrows. They are directly inserted into the HTML code. For instance, the right arrow can be represented as โ†’.
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Ginifab
ginifab.com โ€บ symbols โ€บ html_symbol_entities_arrow.html
Arrow Signs, HTML Symbols, Entities, Character Codes
โ†“ (Down Arrow Sign) - &darr; or &#8595; or &#x2193; <p>โ†“<p> <p>&darr;<p> <p>&#8595;<p> <p>&#x2193;<p> Add the unicode declaration to your document head. Simply add the following meta tag anywhere inside the <head> of your web page. This will insure that your special characters display correctly.
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EasyRetro
easyretro.io โ€บ html-symbols โ€บ arrows โ€บ heavy-right-arrow
Heavy right arrow Reference - HTML Symbols
HTML Symbols > arrows > heavy right arrow ยท Check and copy alternative codes for the heavy right arrow symbol ยท โž™ ยท Copy // Example for HTML <span> &#10137; </span> Copy /* Example for CSS */ span::before { content: "\2799"; } โžš heavy north east arrow ยท
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Educative
educative.io โ€บ answers โ€บ how-to-create-the-arrow-symbol-in-html
How to create the arrow symbol in HTML
You can add the arrow symbol in HTML using the entity number, entity name, or hexadecimal reference methods.