Sea Serpent
#4bc7cf
About Sea Serpent
Sea Serpent feels like looking at dark seawater caught under daylight. It's a mid-light teal-blue, but it doesn't go airy like Caribbean Blue, and it doesn't float soft like Petrichor. Compared with Castaway, it keeps more of that cool, blue-forward pull and turns the teal into a deeper, calmer current.
I use Sea Serpent for dashboards and finance apps when secondary surfaces need to read present without looking thin. Think card headers, table striping, and interactive panel states in healthcare portals where you want focus to land, but not glare. It's also solid for admin UI in SaaS and internal data views because the saturation holds up while the mood stays restrained, the one you reach for when you want cool clarity with weight.
Pair it with clean, neutral grays and slightly cooler body text. On overly warm displays it can look a touch heavier than you expect, so keep an eye on your whites.
Variations
Shades
Darker variations, created by mixing toward black.
Tints
Lighter variations, created by mixing toward white.
Tones
Muted variations, created by reducing saturation.
Hues
Hue rotations around the color wheel.
Temperatures
Warm and cool shifts of this color.
Color harmonies
Suggested palettes
Palettes built around this color.