#439BD2 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 #439BD2 works with other colors. Named schemes with #439BD2 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 #439BD2 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 #439BD2 at work across the surfaces designers actually ship.
:root {
--color-base: #439BD2;
--color-base-rgb: 67 155 210;
--color-base-oklch: oklch(66.0% 0.117 239.5);
--color-50: #F2F9FC;
--color-100: #DDEEF8;
--color-200: #BDDCEF;
--color-300: #90C1DF;
--color-400: #67A5CB;
--color-500: #4587B0;
--color-600: #3B6A87;
--color-700: #2F4D60;
--color-800: #22343F;
--color-900: #162127;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
carolina-blue: {
50: '#F2F9FC',
100: '#DDEEF8',
200: '#BDDCEF',
300: '#90C1DF',
400: '#67A5CB',
500: '#4587B0',
600: '#3B6A87',
700: '#2F4D60',
800: '#22343F',
900: '#162127',
},
}
$base: #439BD2; $base-ink: #141310; $base-50: #F2F9FC; $base-100: #DDEEF8; $base-200: #BDDCEF; $base-300: #90C1DF; $base-400: #67A5CB; $base-500: #4587B0; $base-600: #3B6A87; $base-700: #2F4D60; $base-800: #22343F; $base-900: #162127; $base-hover: #2B7EB1; $base-subtle: #CBE0EC;
{
"color": {
"base": {
"value": "#439BD2",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F2F9FC",
"type": "color"
},
"100": {
"value": "#DDEEF8",
"type": "color"
},
"200": {
"value": "#BDDCEF",
"type": "color"
},
"300": {
"value": "#90C1DF",
"type": "color"
},
"400": {
"value": "#67A5CB",
"type": "color"
},
"500": {
"value": "#4587B0",
"type": "color"
},
"600": {
"value": "#3B6A87",
"type": "color"
},
"700": {
"value": "#2F4D60",
"type": "color"
},
"800": {
"value": "#22343F",
"type": "color"
},
"900": {
"value": "#162127",
"type": "color"
}
}
}
}