#EFF9FC is a light neutral with only a whisper of temperate cast. On the Color Lab it reads clean and engineered, restrained and easy to live with. It holds up as a large surface and is too pale to lead as a primary accent.
Not just a swatch — here's how #EFF9FC works with other colors. Named schemes with #EFF9FC in its natural role, and a note on why the supporting colors balance it.
Alice Blue 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.
Alice Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Alice Blue is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Alice Blue.
Alice Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Alice Blue 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 Alice Blue carrying the quiet middle.
How #EFF9FC 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 #EFF9FC at work across the surfaces designers actually ship.
:root {
--color-base: #EFF9FC;
--color-base-rgb: 239 249 252;
--color-base-oklch: oklch(97.6% 0.011 217.5);
--color-50: #F2FAFD;
--color-100: #DCF2F9;
--color-200: #BBE5F2;
--color-300: #8CCFE3;
--color-400: #61B7D1;
--color-500: #3F9AB6;
--color-600: #37778B;
--color-700: #2C5663;
--color-800: #203941;
--color-900: #152428;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
alice-blue: {
50: '#F2FAFD',
100: '#DCF2F9',
200: '#BBE5F2',
300: '#8CCFE3',
400: '#61B7D1',
500: '#3F9AB6',
600: '#37778B',
700: '#2C5663',
800: '#203941',
900: '#152428',
},
}
$base: #EFF9FC; $base-ink: #141310; $base-50: #F2FAFD; $base-100: #DCF2F9; $base-200: #BBE5F2; $base-300: #8CCFE3; $base-400: #61B7D1; $base-500: #3F9AB6; $base-600: #37778B; $base-700: #2C5663; $base-800: #203941; $base-900: #152428; $base-hover: #9CD9EC; $base-subtle: #FAFDFE;
{
"color": {
"base": {
"value": "#EFF9FC",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F2FAFD",
"type": "color"
},
"100": {
"value": "#DCF2F9",
"type": "color"
},
"200": {
"value": "#BBE5F2",
"type": "color"
},
"300": {
"value": "#8CCFE3",
"type": "color"
},
"400": {
"value": "#61B7D1",
"type": "color"
},
"500": {
"value": "#3F9AB6",
"type": "color"
},
"600": {
"value": "#37778B",
"type": "color"
},
"700": {
"value": "#2C5663",
"type": "color"
},
"800": {
"value": "#203941",
"type": "color"
},
"900": {
"value": "#152428",
"type": "color"
}
}
}
}