Radioactive Trefoil Circle black filled icon

About the Radioactive Trefoil Circle black filled icon

Three tapered blades radiate from a small central dot at equal 120-degree spacing, the standard radiation trefoil, held inside a clean circular border. It reads immediately as radioactive material, an ionizing radiation hazard and restricted access. Use it on safety signage, nuclear power dashboards, laboratory equipment labels, science infographics and game interfaces marking hazard zones.

The circle gives the mark badge-like weight and keeps the blade tips clear of the edge, so the shape holds at button size. Pair it with biohazard, high voltage and warning triangle icons, and place it on a warning-label plate when a real-world sign is needed.

This is the solid black filled version of the radioactive trefoil circle icon: a bold silhouette that reads clearly at 16-24 px and on dark or busy backgrounds, and prints well in one colour.

Download it free as a scalable SVG vector or transparent-background PNG in seven sizes (16 to 512px), copy the SVG code straight into your project, or open it in the free online editor to change colors, apply gold, silver, neon and gradient styles, animate it, or convert it to EPS, PDF and DXF.

Free for personal and commercial use with attribution.