Radioactive Trefoil Circle black outline icon

About the Radioactive Trefoil Circle black outline 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 black outline version of the radioactive trefoil circle icon: even, monoline strokes that stay crisp at small sizes and suit clean, minimal interfaces, wireframes and light backgrounds.

It downloads free as an SVG vector or transparent PNG in seven sizes, and the free online editor lets you recolor it, apply gold, silver, neon and gradient styles, add animation, or convert it to EPS, PDF and DXF.

Free for personal and commercial use with attribution.