Once in a Blue Moon

Once in a Blue Moon reads like a blue that's been cooled just enough to tip into violet, but not in the smoky way. Compared to Blue Screen of Death's blunt purity, this one keeps a gentler undertone and a slightly softened saturation. It doesn't feel cornered or flat, it feels like it's hovering.

I use it when I want a cooler, purple-leaning blue that still behaves like a UI signal, not a decorative wash. Think callouts and selection states in admin tools, telecom portals, and compliance workflows where you need something firmer than periwinkle, but not as heavy or "serious" as Denim. It works in marketing landing components too, especially when you want focus without shouting.

Pair it with near-neutrals that aren't too warm, otherwise it can start to look oddly gray next to creams. For crisp contrast, keep the text and borders in clean cool tones, and let this be the accent that does the last 10% of the attention work.