#579BC2 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 #579BC2 works with other colors. Named schemes with #579BC2 in its natural role, and a note on why the supporting colors balance it.
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 opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Carolina 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.
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.
How #579BC2 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 #579BC2 at work across the surfaces designers actually ship.
:root {
--color-base: #579BC2;
--color-base-rgb: 87 155 194;
--color-base-oklch: oklch(66.0% 0.090 235.5);
--color-50: #F3F8FB;
--color-100: #E0EDF5;
--color-200: #C3DBE9;
--color-300: #99C0D6;
--color-400: #72A3C0;
--color-500: #5185A4;
--color-600: #44697E;
--color-700: #344C5A;
--color-800: #25333C;
--color-900: #182025;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
carolina-blue: {
50: '#F3F8FB',
100: '#E0EDF5',
200: '#C3DBE9',
300: '#99C0D6',
400: '#72A3C0',
500: '#5185A4',
600: '#44697E',
700: '#344C5A',
800: '#25333C',
900: '#182025',
},
}
$base: #579BC2; $base-ink: #141310; $base-50: #F3F8FB; $base-100: #E0EDF5; $base-200: #C3DBE9; $base-300: #99C0D6; $base-400: #72A3C0; $base-500: #5185A4; $base-600: #44697E; $base-700: #344C5A; $base-800: #25333C; $base-900: #182025; $base-hover: #3B7EA5; $base-subtle: #D0E0E9;
{
"color": {
"base": {
"value": "#579BC2",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3F8FB",
"type": "color"
},
"100": {
"value": "#E0EDF5",
"type": "color"
},
"200": {
"value": "#C3DBE9",
"type": "color"
},
"300": {
"value": "#99C0D6",
"type": "color"
},
"400": {
"value": "#72A3C0",
"type": "color"
},
"500": {
"value": "#5185A4",
"type": "color"
},
"600": {
"value": "#44697E",
"type": "color"
},
"700": {
"value": "#344C5A",
"type": "color"
},
"800": {
"value": "#25333C",
"type": "color"
},
"900": {
"value": "#182025",
"type": "color"
}
}
}
}