Poisonous Potion

It reads like a freshly stirred vial glow, not a wall-sign lime and not moss after rain. Poisonous Potion sits in the bright green lane but leans more electric and slightly cooler, with a tighter undertone than Overgrown's mossy warmth. Compared to King Lime, it's less chartreuse-clean and more "ink that bites" than overhead-lit paint. Versus Opulent Lime, it feels more alert and concentrated, with less of that open daylight looseness.

For me, it's the one you reach for when the UI needs urgent clarity without slipping into the leafy friendliness of the other greens. I use it for fraud and exception alerts in fintech queues, critical state chips in logistics tracking, and high-contrast callouts on field-monitoring maps over satellite or dense photo backgrounds. It also works well in ecommerce admin flows where progression needs to feel immediate, not playful.

Quirk: on near-white panels it can feel a touch sharp, so I'd pair it with deeper greens or softer gray strokes to keep it from overpowering nearby labels.