#2F9FCB 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 #2F9FCB works with other colors. Named schemes with #2F9FCB 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 #2F9FCB 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 #2F9FCB at work across the surfaces designers actually ship.
:root {
--color-base: #2F9FCB;
--color-base-rgb: 47 159 203;
--color-base-oklch: oklch(66.0% 0.116 229.3);
--color-50: #F2FAFD;
--color-100: #DDF0F8;
--color-200: #BDE1EF;
--color-300: #90C9E0;
--color-400: #66AFCC;
--color-500: #4492B1;
--color-600: #3A7287;
--color-700: #2E5260;
--color-800: #22373F;
--color-900: #162227;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
carolina-blue: {
50: '#F2FAFD',
100: '#DDF0F8',
200: '#BDE1EF',
300: '#90C9E0',
400: '#66AFCC',
500: '#4492B1',
600: '#3A7287',
700: '#2E5260',
800: '#22373F',
900: '#162227',
},
}
$base: #2F9FCB; $base-ink: #141310; $base-50: #F2FAFD; $base-100: #DDF0F8; $base-200: #BDE1EF; $base-300: #90C9E0; $base-400: #66AFCC; $base-500: #4492B1; $base-600: #3A7287; $base-700: #2E5260; $base-800: #22373F; $base-900: #162227; $base-hover: #267FA2; $base-subtle: #C6E0EA;
{
"color": {
"base": {
"value": "#2F9FCB",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F2FAFD",
"type": "color"
},
"100": {
"value": "#DDF0F8",
"type": "color"
},
"200": {
"value": "#BDE1EF",
"type": "color"
},
"300": {
"value": "#90C9E0",
"type": "color"
},
"400": {
"value": "#66AFCC",
"type": "color"
},
"500": {
"value": "#4492B1",
"type": "color"
},
"600": {
"value": "#3A7287",
"type": "color"
},
"700": {
"value": "#2E5260",
"type": "color"
},
"800": {
"value": "#22373F",
"type": "color"
},
"900": {
"value": "#162227",
"type": "color"
}
}
}
}