#9EEFDF is a soft, cool cyan. It holds up as a large surface and is too pale to lead as a primary accent.
Not just a swatch — here's how #9EEFDF works with other colors. Named schemes with #9EEFDF in its natural role, and a note on why the supporting colors balance it.
Seafoam keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Seafoam sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.
Seafoam opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Seafoam is the single accent in this high-contrast editorial system — set on near-white paper against near-black ink, with a warm grey and a desaturated tint of Seafoam carrying the quiet middle.
Seafoam is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Seafoam.
How #9EEFDF actually behaves in design work — read from its OKLCH lightness, chroma and hue, not just its raw numbers. Ten signals to help you decide where this color earns its place.
Not a swatch to memorise — a color to build with. Here is #9EEFDF at work across the surfaces designers actually ship.
:root {
--color-base: #9EEFDF;
--color-base-rgb: 158 239 223;
--color-base-oklch: oklch(89.5% 0.082 180.5);
--color-50: #F1FDFB;
--color-100: #DBFAF4;
--color-200: #B9F3E8;
--color-300: #89E6D3;
--color-400: #5DD5BD;
--color-500: #3BBAA0;
--color-600: #348E7C;
--color-700: #2A6459;
--color-800: #1F423B;
--color-900: #152824;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
seafoam: {
50: '#F1FDFB',
100: '#DBFAF4',
200: '#B9F3E8',
300: '#89E6D3',
400: '#5DD5BD',
500: '#3BBAA0',
600: '#348E7C',
700: '#2A6459',
800: '#1F423B',
900: '#152824',
},
}
$base: #9EEFDF; $base-ink: #141310; $base-50: #F1FDFB; $base-100: #DBFAF4; $base-200: #B9F3E8; $base-300: #89E6D3; $base-400: #5DD5BD; $base-500: #3BBAA0; $base-600: #348E7C; $base-700: #2A6459; $base-800: #1F423B; $base-900: #152824; $base-hover: #5AE4C9; $base-subtle: #E5F7F4;
{
"color": {
"base": {
"value": "#9EEFDF",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F1FDFB",
"type": "color"
},
"100": {
"value": "#DBFAF4",
"type": "color"
},
"200": {
"value": "#B9F3E8",
"type": "color"
},
"300": {
"value": "#89E6D3",
"type": "color"
},
"400": {
"value": "#5DD5BD",
"type": "color"
},
"500": {
"value": "#3BBAA0",
"type": "color"
},
"600": {
"value": "#348E7C",
"type": "color"
},
"700": {
"value": "#2A6459",
"type": "color"
},
"800": {
"value": "#1F423B",
"type": "color"
},
"900": {
"value": "#152824",
"type": "color"
}
}
}
}