A near-black navy, as dense and flat as the sky just before a storm hits.
Slate Undertow
#223240
rgb(34, 50, 64)
A dark slate blue-gray with the pull of deep water moving beneath a calm surface.
Barometric Teal
#0E8C8A
rgb(14, 140, 138)
A vivid, saturated teal that behaves like a pressure drop — sudden, legible, impossible to miss.
Gunmetal Spindrift
#3A4F55
rgb(58, 79, 85)
A muted blue-gray with the cold sheen of sea spray settling on metal rigging.
Deep Trough
#0B2730
rgb(11, 39, 48)
The darkest shade in the set, teal-black like the floor of a wave trough at night.
Weathered Jade
#4C6B63
rgb(76, 107, 99)
A dulled green-gray resembling lichen clinging to salt-worn stone.
Foam Pallor
#C9D9D4
rgb(201, 217, 212)
A pale, faintly green white, the thin crest of foam breaking against darker water.
Stormglass reads as instrumentation rather than decoration — each shade named for a moment in a barometer's slow climb or fall. Squall Horizon and Deep Trough sit at the near-black end, so dark they register as ink before they register as blue, while Barometric Teal cuts through as the single saturated note in an otherwise desaturated range. Slate Undertow, Gunmetal Spindrift, and Weathered Jade fill the middle distance with grayed-down blues and greens that feel more like weather than pigment. Foam Pallor arrives last, pale and slightly green, the only hue in the set that could pass for daylight.
Sponsors
Marine brands, meteorology apps, and editorial sites covering climate or coastal life can pull real authority from these tones without reaching for a cliché sailor-stripe blue. Barometric Teal works well as an accent for data points, alerts, or interactive states precisely because everything around it is so restrained — a single CTA in that teal reads instantly against Squall Horizon or Deep Trough. Outdoor gear makers, instrument brands, and science-adjacent products can borrow the seriousness here, while Foam Pallor keeps long-form text legible without breaking the somber tone. Bright, cheerful accents tend to fight this set; restraint is the whole point.
Set type in Foam Pallor over Squall Horizon or Deep Trough for strong legibility with minimal glare — both dark bases hold up well under standard contrast checks for body copy. Reserve Barometric Teal for links, icons, and small UI moments rather than large fields, since its intensity fades fast once spread across bigger areas. Slate Undertow and Gunmetal Spindrift make dependable card backgrounds or section dividers, close enough in value to Squall Horizon that transitions feel atmospheric instead of abrupt. Weathered Jade serves as a quiet border or secondary text color where separation is needed without introducing a new hue family.
