#F3F9FB 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 #F3F9FB works with other colors. Named schemes with #F3F9FB in its natural role, and a note on why the supporting colors balance it.
Alice Blue 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.
Alice Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Alice Blue is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Alice Blue.
Alice Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Alice Blue 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 Alice Blue carrying the quiet middle.
How #F3F9FB 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 #F3F9FB at work across the surfaces designers actually ship.
:root {
--color-base: #F3F9FB;
--color-base-rgb: 243 249 251;
--color-base-oklch: oklch(97.8% 0.007 219.6);
--color-50: #F3F9FC;
--color-100: #E0F0F5;
--color-200: #C2E0EB;
--color-300: #97C8D8;
--color-400: #70AEC2;
--color-500: #4E90A6;
--color-600: #427080;
--color-700: #33515C;
--color-800: #24363C;
--color-900: #182225;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
alice-blue: {
50: '#F3F9FC',
100: '#E0F0F5',
200: '#C2E0EB',
300: '#97C8D8',
400: '#70AEC2',
500: '#4E90A6',
600: '#427080',
700: '#33515C',
800: '#24363C',
900: '#182225',
},
}
$base: #F3F9FB; $base-ink: #141310; $base-50: #F3F9FC; $base-100: #E0F0F5; $base-200: #C2E0EB; $base-300: #97C8D8; $base-400: #70AEC2; $base-500: #4E90A6; $base-600: #427080; $base-700: #33515C; $base-800: #24363C; $base-900: #182225; $base-hover: #A9D4E2; $base-subtle: #FCFDFE;
{
"color": {
"base": {
"value": "#F3F9FB",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3F9FC",
"type": "color"
},
"100": {
"value": "#E0F0F5",
"type": "color"
},
"200": {
"value": "#C2E0EB",
"type": "color"
},
"300": {
"value": "#97C8D8",
"type": "color"
},
"400": {
"value": "#70AEC2",
"type": "color"
},
"500": {
"value": "#4E90A6",
"type": "color"
},
"600": {
"value": "#427080",
"type": "color"
},
"700": {
"value": "#33515C",
"type": "color"
},
"800": {
"value": "#24363C",
"type": "color"
},
"900": {
"value": "#182225",
"type": "color"
}
}
}
}