#EFF2F3 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 #EFF2F3 works with other colors. Named schemes with #EFF2F3 in its natural role, and a note on why the supporting colors balance it.
Cool White 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.
Cool White opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Cool White is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Cool White.
Cool White keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Cool White 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 Cool White carrying the quiet middle.
How #EFF2F3 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 #EFF2F3 at work across the surfaces designers actually ship.
:root {
--color-base: #EFF2F3;
--color-base-rgb: 239 242 243;
--color-base-oklch: oklch(95.9% 0.003 219.5);
--color-50: #F6F8F9;
--color-100: #E8ECEE;
--color-200: #D1D9DC;
--color-300: #AFBCC1;
--color-400: #8D9FA5;
--color-500: #6E8187;
--color-600: #58656A;
--color-700: #424A4D;
--color-800: #2D3234;
--color-900: #1D2020;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
cool-white: {
50: '#F6F8F9',
100: '#E8ECEE',
200: '#D1D9DC',
300: '#AFBCC1',
400: '#8D9FA5',
500: '#6E8187',
600: '#58656A',
700: '#424A4D',
800: '#2D3234',
900: '#1D2020',
},
}
$base: #EFF2F3; $base-ink: #141310; $base-50: #F6F8F9; $base-100: #E8ECEE; $base-200: #D1D9DC; $base-300: #AFBCC1; $base-400: #8D9FA5; $base-500: #6E8187; $base-600: #58656A; $base-700: #424A4D; $base-800: #2D3234; $base-900: #1D2020; $base-hover: #B9C6CA; $base-subtle: #FBFBFC;
{
"color": {
"base": {
"value": "#EFF2F3",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F6F8F9",
"type": "color"
},
"100": {
"value": "#E8ECEE",
"type": "color"
},
"200": {
"value": "#D1D9DC",
"type": "color"
},
"300": {
"value": "#AFBCC1",
"type": "color"
},
"400": {
"value": "#8D9FA5",
"type": "color"
},
"500": {
"value": "#6E8187",
"type": "color"
},
"600": {
"value": "#58656A",
"type": "color"
},
"700": {
"value": "#424A4D",
"type": "color"
},
"800": {
"value": "#2D3234",
"type": "color"
},
"900": {
"value": "#1D2020",
"type": "color"
}
}
}
}