Lagoon

Lagoon looks like sea glass held up under a bright monitor: blue-green, but with a calmer surface than Baltic and Java. Compared to those, it sits a touch less forward and a bit more balanced, so it feels like it belongs in the layout instead of grabbing the cursor's attention immediately.

For UI, I'd use Lagoon for the in-between moments in dashboards and health apps where you want clarity without the sharper punch of Java or the extra snap of Baltic. It's great for secondary highlights, process steps, and "ready" states in SaaS tables, plus subtle chart accents in fintech screens. It also reads steadier than Emerald Oasis when you need some teal energy, but still less saturated than the more directive neighbors.

Quirk: it can lean slightly more cyan on warmer displays, so pair it with cool grays or deep charcoal text to keep the undertone from drifting.