#9FFDEF 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 #9FFDEF works with other colors. Named schemes with #9FFDEF in its natural role, and a note on why the supporting colors balance it.
Celeste keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Celeste 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.
Celeste opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Celeste 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 Celeste carrying the quiet middle.
Celeste is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Celeste.
How #9FFDEF 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 #9FFDEF at work across the surfaces designers actually ship.
:root {
--color-base: #9FFDEF;
--color-base-rgb: 159 253 239;
--color-base-oklch: oklch(93.2% 0.092 183.8);
--color-50: #F0FEFC;
--color-100: #D8FDF8;
--color-200: #B1FCF0;
--color-300: #7AF6E3;
--color-400: #4AE8D1;
--color-500: #26CFB6;
--color-600: #259D8B;
--color-700: #216E63;
--color-800: #194841;
--color-900: #122C28;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
celeste: {
50: '#F0FEFC',
100: '#D8FDF8',
200: '#B1FCF0',
300: '#7AF6E3',
400: '#4AE8D1',
500: '#26CFB6',
600: '#259D8B',
700: '#216E63',
800: '#194841',
900: '#122C28',
},
}
$base: #9FFDEF; $base-ink: #141310; $base-50: #F0FEFC; $base-100: #D8FDF8; $base-200: #B1FCF0; $base-300: #7AF6E3; $base-400: #4AE8D1; $base-500: #26CFB6; $base-600: #259D8B; $base-700: #216E63; $base-800: #194841; $base-900: #122C28; $base-hover: #4FFBE2; $base-subtle: #E6FBF8;
{
"color": {
"base": {
"value": "#9FFDEF",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F0FEFC",
"type": "color"
},
"100": {
"value": "#D8FDF8",
"type": "color"
},
"200": {
"value": "#B1FCF0",
"type": "color"
},
"300": {
"value": "#7AF6E3",
"type": "color"
},
"400": {
"value": "#4AE8D1",
"type": "color"
},
"500": {
"value": "#26CFB6",
"type": "color"
},
"600": {
"value": "#259D8B",
"type": "color"
},
"700": {
"value": "#216E63",
"type": "color"
},
"800": {
"value": "#194841",
"type": "color"
},
"900": {
"value": "#122C28",
"type": "color"
}
}
}
}