#EFF9F4 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 #EFF9F4 works with other colors. Named schemes with #EFF9F4 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 leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.
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 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 #EFF9F4 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 #EFF9F4 at work across the surfaces designers actually ship.
:root {
--color-base: #EFF9F4;
--color-base-rgb: 239 249 244;
--color-base-oklch: oklch(97.3% 0.012 164.8);
--color-50: #F4FBF7;
--color-100: #E1F4EB;
--color-200: #C4E8D6;
--color-300: #9BD5B8;
--color-400: #74BE99;
--color-500: #53A27A;
--color-600: #457D61;
--color-700: #355A47;
--color-800: #263B30;
--color-900: #19251F;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
white-smoke: {
50: '#F4FBF7',
100: '#E1F4EB',
200: '#C4E8D6',
300: '#9BD5B8',
400: '#74BE99',
500: '#53A27A',
600: '#457D61',
700: '#355A47',
800: '#263B30',
900: '#19251F',
},
}
$base: #EFF9F4; $base-ink: #141310; $base-50: #F4FBF7; $base-100: #E1F4EB; $base-200: #C4E8D6; $base-300: #9BD5B8; $base-400: #74BE99; $base-500: #53A27A; $base-600: #457D61; $base-700: #355A47; $base-800: #263B30; $base-900: #19251F; $base-hover: #A9DEC4; $base-subtle: #FBFDFC;
{
"color": {
"base": {
"value": "#EFF9F4",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F4FBF7",
"type": "color"
},
"100": {
"value": "#E1F4EB",
"type": "color"
},
"200": {
"value": "#C4E8D6",
"type": "color"
},
"300": {
"value": "#9BD5B8",
"type": "color"
},
"400": {
"value": "#74BE99",
"type": "color"
},
"500": {
"value": "#53A27A",
"type": "color"
},
"600": {
"value": "#457D61",
"type": "color"
},
"700": {
"value": "#355A47",
"type": "color"
},
"800": {
"value": "#263B30",
"type": "color"
},
"900": {
"value": "#19251F",
"type": "color"
}
}
}
}