A channel-deep navy with almost no light left in it, standing in for the water beyond where the seabed drops away.
Harbor Teal
#1F5C6B
rgb(31, 92, 107)
A working teal with weight to it, closer to a boat hull than a postcard, built for dense fills and headers.
Slate Current
#4A7C8C
rgb(74, 124, 140)
A mid-water blue-gray that reads as neither warm nor cold, useful wherever a design needs a steady middle tone.
Seaglass Drift
#7FAEA8
rgb(127, 174, 168)
A worn green-blue with the cloudiness of real sea glass, sitting right at the line between blue and green.
Pale Horizon
#B7D4CE
rgb(183, 212, 206)
A soft, hazy tone pulled from where sky and water blur together on an overcast morning.
Foam Mist
#E8F0EA
rgb(232, 240, 234)
A near-white with a faint green cast, like the thin film of foam left on sand after a wave retreats.
Tidal Drift builds its range the way a shoreline actually looks at low tide — dark water out past the sandbar, teal in the shallows, then a run of lighter tones as the sand dries. Abyssal Navy and Harbor Teal carry most of the visual weight, giving the set a cooler, more settled feel than a typical summer-beach palette. Seaglass Drift sits in the middle as the clearest statement color, pulling slightly green without losing its connection to blue. The overall mood leans contemplative rather than energetic, closer to an early walk on a cold beach than a vacation ad.
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The spread works for coastal real estate, marine-adjacent brands, wellness studios, or any product trying to signal calm without leaning on generic spa blues. Abyssal Navy and Harbor Teal cover dark UI modes, headers, and footer bands, while Pale Horizon and Foam Mist handle backgrounds and card surfaces that need to stay quiet. Slate Current is flexible enough for secondary buttons or icon sets, and Seaglass Drift makes a confident accent for badges, links, or callouts without clashing against either end of the range. Packaging for skincare, bath products, or outdoor gear can pull the full sequence for a label system that reads as deliberate rather than decorative.
Pair Abyssal Navy with Foam Mist for a dark-mode interface with real contrast, then bring in Seaglass Drift sparingly for interactive elements so it keeps its punch. Slate Current works as a body-text color on light backgrounds when pure black feels too harsh for the rest of the palette. In print, run the sequence left to right on a business card or packaging band to echo the tide's actual gradient, from deep water down to dry foam. Keep accent usage to one or two colors per layout — with six closely related blues and greens, spreading all of them across a single screen will flatten the depth the range is built to create.
