#3FAACA is a mid-toned, cool blue. On the Color Lab it reads clean and engineered. It carries a legible label as a UI accent and sits well as a supporting tone.
Not just a swatch — here's how #3FAACA works with other colors. Named schemes with #3FAACA in its natural role, and a note on why the supporting colors balance it.
Carolina Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Carolina Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Carolina 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 Carolina Blue.
Carolina 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 Carolina Blue carrying the quiet middle.
Carolina 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 #3FAACA 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 #3FAACA at work across the surfaces designers actually ship.
:root {
--color-base: #3FAACA;
--color-base-rgb: 63 170 202;
--color-base-oklch: oklch(69.0% 0.106 221.5);
--color-50: #F3FAFC;
--color-100: #DEF1F7;
--color-200: #BFE3ED;
--color-300: #93CBDC;
--color-400: #6AB2C8;
--color-500: #4895AD;
--color-600: #3D7484;
--color-700: #30545E;
--color-800: #23383E;
--color-900: #172326;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
carolina-blue: {
50: '#F3FAFC',
100: '#DEF1F7',
200: '#BFE3ED',
300: '#93CBDC',
400: '#6AB2C8',
500: '#4895AD',
600: '#3D7484',
700: '#30545E',
800: '#23383E',
900: '#172326',
},
}
$base: #3FAACA; $base-ink: #141310; $base-50: #F3FAFC; $base-100: #DEF1F7; $base-200: #BFE3ED; $base-300: #93CBDC; $base-400: #6AB2C8; $base-500: #4895AD; $base-600: #3D7484; $base-700: #30545E; $base-800: #23383E; $base-900: #172326; $base-hover: #2E8AA7; $base-subtle: #CAE3EA;
{
"color": {
"base": {
"value": "#3FAACA",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3FAFC",
"type": "color"
},
"100": {
"value": "#DEF1F7",
"type": "color"
},
"200": {
"value": "#BFE3ED",
"type": "color"
},
"300": {
"value": "#93CBDC",
"type": "color"
},
"400": {
"value": "#6AB2C8",
"type": "color"
},
"500": {
"value": "#4895AD",
"type": "color"
},
"600": {
"value": "#3D7484",
"type": "color"
},
"700": {
"value": "#30545E",
"type": "color"
},
"800": {
"value": "#23383E",
"type": "color"
},
"900": {
"value": "#172326",
"type": "color"
}
}
}
}