#EFF9F6 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 #EFF9F6 works with other colors. Named schemes with #EFF9F6 in its natural role, and a note on why the supporting colors balance it.
White Smoke 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.
White Smoke opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
White Smoke is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of White Smoke.
White Smoke keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
White Smoke 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 White Smoke carrying the quiet middle.
How #EFF9F6 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 #EFF9F6 at work across the surfaces designers actually ship.
:root {
--color-base: #EFF9F6;
--color-base-rgb: 239 249 246;
--color-base-oklch: oklch(97.4% 0.011 176.3);
--color-50: #F4FBF9;
--color-100: #E1F4EE;
--color-200: #C4E8DE;
--color-300: #9BD5C3;
--color-400: #74BEA8;
--color-500: #53A28A;
--color-600: #457D6C;
--color-700: #355A4F;
--color-800: #263B35;
--color-900: #192521;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
white-smoke: {
50: '#F4FBF9',
100: '#E1F4EE',
200: '#C4E8DE',
300: '#9BD5C3',
400: '#74BEA8',
500: '#53A28A',
600: '#457D6C',
700: '#355A4F',
800: '#263B35',
900: '#192521',
},
}
$base: #EFF9F6; $base-ink: #141310; $base-50: #F4FBF9; $base-100: #E1F4EE; $base-200: #C4E8DE; $base-300: #9BD5C3; $base-400: #74BEA8; $base-500: #53A28A; $base-600: #457D6C; $base-700: #355A4F; $base-800: #263B35; $base-900: #192521; $base-hover: #A9DECE; $base-subtle: #FBFDFC;
{
"color": {
"base": {
"value": "#EFF9F6",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F4FBF9",
"type": "color"
},
"100": {
"value": "#E1F4EE",
"type": "color"
},
"200": {
"value": "#C4E8DE",
"type": "color"
},
"300": {
"value": "#9BD5C3",
"type": "color"
},
"400": {
"value": "#74BEA8",
"type": "color"
},
"500": {
"value": "#53A28A",
"type": "color"
},
"600": {
"value": "#457D6C",
"type": "color"
},
"700": {
"value": "#355A4F",
"type": "color"
},
"800": {
"value": "#263B35",
"type": "color"
},
"900": {
"value": "#192521",
"type": "color"
}
}
}
}