Octagon Fill

The octagon-fill icon represents filled eight-sided shapes, emphasized stop indicators, and solid octagonal containers in design systems and interface applications. Featuring a solid filled octagon, this icon is commonly used to indicate active stop states, critical warning containers, prominent alert badges, and emphasized geometric shapes in UI frameworks, design tools, and notification systems.

In modern applications where filled shapes indicate active or critical states, error dialogs, GitHub's critical security vulnerabilities, or elevated warning notifications in Sentry's error tracking, you'll see this filled octagon icon representing high-priority alerts and blocking states. It appears in form validation when showing critical errors requiring immediate attention, in notification systems when displaying security alerts, or in badge components when indicating severe issues or blocked actions.

From a visual hierarchy perspective, the filled octagon communicates more than just 'stop action' - it specifically indicates the severity and criticality of warnings through solid fill, the blocking nature of errors that prevent progression, and the design pattern where filled variants signal maximum priority and urgency. This visual emphasis helps users immediately identify critical issues requiring resolution.

Octagon Fill is one of 458 icons in Akar Icons, made by Arturo Wibawa and released under MIT. 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 OctagonFillIcon to components/icons/akar-icons-octagon-fill.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 OctagonFillIcon 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 Octagon Fill icon, or any of 458 Akar Icons 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="Octagon Fill", so screen readers say what it does.

Yes. OctagonFillIcon passes every SVG prop to the svg element, so <OctagonFillIcon 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. MIT allows commercial use; keep the license notice when you ship the icons' source files. The full terms are in the license, linked on this page.

No visible credit is required: MIT only asks that you keep the license notice if you ship the icons' source files. Icons installed with the shadcn CLI already start with a comment naming Akar Icons, Arturo Wibawa and the license.

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

8 other libraries draw an icon called Octagon Fill. 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, shape, filled, stop and critical. Each tag page lists the icons that carry it from every library, which is the quickest way to find a match for Octagon Fill in another set.

Akar Icons draws many icons in several styles: Fill next to the default. Open the library and pick a style above the grid to see Octagon Fill's siblings in it.