#4FA9DD is a mid-toned, cool blue. On the Color Lab it reads clean and engineered. It sits well as a supporting tone.
Not just a swatch — here's how #4FA9DD works with other colors. Named schemes with #4FA9DD in its natural role, and a note on why the supporting colors balance it.
Picton Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Picton Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Picton 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 Picton Blue.
Picton 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 Picton Blue carrying the quiet middle.
Picton Blue anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.
How #4FA9DD 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 #4FA9DD at work across the surfaces designers actually ship.
:root {
--color-base: #4FA9DD;
--color-base-rgb: 79 169 221;
--color-base-oklch: oklch(70.1% 0.115 236.9);
--color-50: #F2F9FD;
--color-100: #DCEFF9;
--color-200: #BBDEF2;
--color-300: #8CC3E3;
--color-400: #61A8D1;
--color-500: #3F8AB6;
--color-600: #376C8B;
--color-700: #2C4F63;
--color-800: #203541;
--color-900: #152128;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
picton-blue: {
50: '#F2F9FD',
100: '#DCEFF9',
200: '#BBDEF2',
300: '#8CC3E3',
400: '#61A8D1',
500: '#3F8AB6',
600: '#376C8B',
700: '#2C4F63',
800: '#203541',
900: '#152128',
},
}
$base: #4FA9DD; $base-ink: #141310; $base-50: #F2F9FD; $base-100: #DCEFF9; $base-200: #BBDEF2; $base-300: #8CC3E3; $base-400: #61A8D1; $base-500: #3F8AB6; $base-600: #376C8B; $base-700: #2C4F63; $base-800: #203541; $base-900: #152128; $base-hover: #278ECA; $base-subtle: #CFE4F0;
{
"color": {
"base": {
"value": "#4FA9DD",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F2F9FD",
"type": "color"
},
"100": {
"value": "#DCEFF9",
"type": "color"
},
"200": {
"value": "#BBDEF2",
"type": "color"
},
"300": {
"value": "#8CC3E3",
"type": "color"
},
"400": {
"value": "#61A8D1",
"type": "color"
},
"500": {
"value": "#3F8AB6",
"type": "color"
},
"600": {
"value": "#376C8B",
"type": "color"
},
"700": {
"value": "#2C4F63",
"type": "color"
},
"800": {
"value": "#203541",
"type": "color"
},
"900": {
"value": "#152128",
"type": "color"
}
}
}
}