#E4F0FD 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 #E4F0FD works with other colors. Named schemes with #E4F0FD in its natural role, and a note on why the supporting colors balance it.
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 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 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 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 #E4F0FD 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 #E4F0FD at work across the surfaces designers actually ship.
:root {
--color-base: #E4F0FD;
--color-base-rgb: 228 240 253;
--color-base-oklch: oklch(95.0% 0.022 250.2);
--color-50: #F0F7FE;
--color-100: #D8EAFD;
--color-200: #B3D5F9;
--color-300: #80B6EF;
--color-400: #5297E0;
--color-500: #2F78C6;
--color-600: #2B5F96;
--color-700: #25466A;
--color-800: #1C3045;
--color-900: #131E2A;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
cool-white: {
50: '#F0F7FE',
100: '#D8EAFD',
200: '#B3D5F9',
300: '#80B6EF',
400: '#5297E0',
500: '#2F78C6',
600: '#2B5F96',
700: '#25466A',
800: '#1C3045',
900: '#131E2A',
},
}
$base: #E4F0FD; $base-ink: #141310; $base-50: #F0F7FE; $base-100: #D8EAFD; $base-200: #B3D5F9; $base-300: #80B6EF; $base-400: #5297E0; $base-500: #2F78C6; $base-600: #2B5F96; $base-700: #25466A; $base-800: #1C3045; $base-900: #131E2A; $base-hover: #89BEF6; $base-subtle: #F7FAFD;
{
"color": {
"base": {
"value": "#E4F0FD",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F0F7FE",
"type": "color"
},
"100": {
"value": "#D8EAFD",
"type": "color"
},
"200": {
"value": "#B3D5F9",
"type": "color"
},
"300": {
"value": "#80B6EF",
"type": "color"
},
"400": {
"value": "#5297E0",
"type": "color"
},
"500": {
"value": "#2F78C6",
"type": "color"
},
"600": {
"value": "#2B5F96",
"type": "color"
},
"700": {
"value": "#25466A",
"type": "color"
},
"800": {
"value": "#1C3045",
"type": "color"
},
"900": {
"value": "#131E2A",
"type": "color"
}
}
}
}