Warning Outline

The warning-outline icon represents a cautionary symbol to alert users of potential issues, with an outlined design. The visual design features a stylized exclamation mark or a warning sign with an outline. This symbol originates from common use in safety and alert systems.

In real-world applications, the warning-outline icon appears in software such as operating systems (e.g., Windows, macOS), web browsers (e.g., Google Chrome, Mozilla Firefox), and applications (e.g., Microsoft Office, Adobe Creative Cloud) to alert users of potential issues or errors.

From a UX perspective, the warning-outline icon communicates to users that there is a potential issue that needs attention, with a less prominent design. This helps users quickly understand the severity of the issue and take necessary actions.

Warning Outline is one of 715 icons in coolicons, made by Kryston Schwarze and released under CC BY 4.0. It is drawn on a 24 × 24 grid.

Sign in (it's free), then open Get icon, Install with shadcn CLI, and pick your package manager to copy the command. It adds WarningOutlineIcon to components/icons/ci-warning-outline.tsx: one file, a size prop (24 by default) and every SVG prop, with no icon package.

Copy it as React (from Get icon, or the Code section): a typed WarningOutlineIcon component you paste into your project, with no package to install. Only the icons you import reach your bundle. It works in Next.js and any React app.

Open Get icon, then Copy as code, and pick Vue, Svelte, Angular, Solid or Preact; the Code section shows each one too. Every version is one self-contained component with the SVG inside, and SVG and data URL copies are there for plain HTML and CSS.

With Pro, the shadcn.io MCP server lets Claude Code, Cursor or any MCP client find the Warning Outline icon, or any of 715 coolicons icons, and install it from a prompt.

It's drawn in currentColor, so it takes the text color wherever you use it: a class like text-primary recolors it. To bake a color in, set one in Customize before you copy.

Set width and height on the component, or a class like size-6. It's drawn on a 24 × 24 grid, so it stays sharp at any size. Customize also sets the size it exports at, its padding and rotation.

Yes. It follows the text color, so with text-foreground (or any theme token) it changes with your light and dark themes. The icon is a vector, so it needs no separate dark asset.

Next to a visible label it's decoration: add aria-hidden="true" so screen readers skip it. Standing alone, as in an icon button, give the button a name instead, like aria-label="Warning Outline", so screen readers say what it does.

Yes. WarningOutlineIcon passes every SVG prop to the svg element, so <WarningOutlineIcon aria-hidden="true" /> works, and so do role="img" with aria-label, or a title child, when it carries meaning on its own.

Yes. Open Get icon, then Download file: SVG for code or design tools like Figma; PNG, WebP or JPEG at 512px; or an ICO favicon with 16, 32 and 48px inside. Each one uses what you set in Customize.

Yes, with credit: CC BY 4.0 asks you to credit the author (Kryston Schwarze) where you use the icons. The full terms are in the license, linked on this page.

Yes. CC BY 4.0 asks you to credit the author where you use the icons, for example "Icons by Kryston Schwarze, CC BY 4.0" on an about or credits page.

Yes. Copying and downloading it is free, and the shadcn CLI install only needs a free account.

7 other libraries draw an icon called Warning Outline. The Other libraries section on this page shows each one, so you can compare them and open the one that fits your style.

Its tags are warning, alert, error, danger and caution. Each tag page lists the icons that carry it from every library, which is the quickest way to find a match for Warning Outline in another set.