Caution Sign Symbol

A symbol from the Warning Symbols collection. Click the symbol or the button below to copy.

Symbol: ☡
Unicode: U+2621
HTML entity: ☡
Category: Warning Symbols

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Download Caution Sign as SVG or PNG — or add a caption to make a labelled icon, badge or sticker.

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transparent background

Fill color applies to monochrome symbols; multicolor emoji keep their own colors. Add a circle/rounded background to make an app icon or avatar. Exports are self-contained; the SVG embeds the glyph's font. Without a background, exports are transparent.

5 of 22 in the warning symbols collection

About the caution sign symbol

The Caution Sign is a black-bordered triangle with an exclamation mark inside, set against a white or transparent center. It appears in technical diagrams, signage mockups, and instructional materials where a generic warning indicator is needed, distinct from the more common yellow warning triangle used in traffic contexts.

How to type Caution Sign

Native keyboard shortcuts for each operating system — derived from the codepoint, so the steps below are always accurate.

Windows

2 options

In Word / Outlook: type 2621 then press Alt + X.
Anywhere: press Win + . to open the emoji & symbol picker, then search.

macOS

2 options

Enable “Unicode Hex Input” in System Settings → Keyboard, then hold Option and type 2621.
Or: Control + Command + Space opens the Character Viewer — search by name.