#E4EEF9 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 #E4EEF9 works with other colors. Named schemes with #E4EEF9 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 #E4EEF9 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 #E4EEF9 at work across the surfaces designers actually ship.
:root {
--color-base: #E4EEF9;
--color-base-rgb: 228 238 249;
--color-base-oklch: oklch(94.5% 0.018 250.6);
--color-50: #F2F7FD;
--color-100: #DDEAF8;
--color-200: #BCD5F0;
--color-300: #8EB6E1;
--color-400: #6497CE;
--color-500: #4279B3;
--color-600: #396089;
--color-700: #2E4761;
--color-800: #213040;
--color-900: #161E27;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
cool-white: {
50: '#F2F7FD',
100: '#DDEAF8',
200: '#BCD5F0',
300: '#8EB6E1',
400: '#6497CE',
500: '#4279B3',
600: '#396089',
700: '#2E4761',
800: '#213040',
900: '#161E27',
},
}
$base: #E4EEF9; $base-ink: #141310; $base-50: #F2F7FD; $base-100: #DDEAF8; $base-200: #BCD5F0; $base-300: #8EB6E1; $base-400: #6497CE; $base-500: #4279B3; $base-600: #396089; $base-700: #2E4761; $base-800: #213040; $base-900: #161E27; $base-hover: #97BEE8; $base-subtle: #F8FAFD;
{
"color": {
"base": {
"value": "#E4EEF9",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F2F7FD",
"type": "color"
},
"100": {
"value": "#DDEAF8",
"type": "color"
},
"200": {
"value": "#BCD5F0",
"type": "color"
},
"300": {
"value": "#8EB6E1",
"type": "color"
},
"400": {
"value": "#6497CE",
"type": "color"
},
"500": {
"value": "#4279B3",
"type": "color"
},
"600": {
"value": "#396089",
"type": "color"
},
"700": {
"value": "#2E4761",
"type": "color"
},
"800": {
"value": "#213040",
"type": "color"
},
"900": {
"value": "#161E27",
"type": "color"
}
}
}
}