Sulphur

Sulphur reads like a bright sulfur note laid over a green label. It's noticeably more citrus-yellow than Mustard, without the dry, olive density that makes Mustard feel heavy. Compared with Hot Sand, it's less sun-baked and direct, more saturated and tighter in tone, so it doesn't behave like a thin layer of light. And unlike Muddy Yellow, it stays clearer and cleaner, not dusty or grayed out.

I like using it when you need a green-family accent that still hits as "yellow" at a glance, especially in CPG shelf labels where you're marking deals or compliance-style statuses. It also works in ecommerce for tier pills and product-card badges where you want the highlight to pop next to olives, and in dashboards and finance apps when you're flagging a specific segment without drifting into the muted, settled warmth of Mustard.

Quirk: Sulphur can feel a bit sharp beside very soft greens, so it plays nicer with slightly deeper sage or warm neutrals that won't dull the yellow side.