#3C8CB5 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 #3C8CB5 works with other colors. Named schemes with #3C8CB5 in its natural role, and a note on why the supporting colors balance it.
Ocean Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Ocean 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 Ocean Blue.
Ocean Blue plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Ocean Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
Ocean 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 Ocean Blue carrying the quiet middle.
How #3C8CB5 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 #3C8CB5 at work across the surfaces designers actually ship.
:root {
--color-base: #3C8CB5;
--color-base-rgb: 60 140 181;
--color-base-oklch: oklch(60.8% 0.099 234.1);
--color-50: #F3F9FC;
--color-100: #E0EEF5;
--color-200: #C2DDEB;
--color-300: #97C2D8;
--color-400: #70A7C2;
--color-500: #4E89A6;
--color-600: #426B80;
--color-700: #334E5C;
--color-800: #24343C;
--color-900: #182125;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
ocean-blue: {
50: '#F3F9FC',
100: '#E0EEF5',
200: '#C2DDEB',
300: '#97C2D8',
400: '#70A7C2',
500: '#4E89A6',
600: '#426B80',
700: '#334E5C',
800: '#24343C',
900: '#182125',
},
}
$base: #3C8CB5; $base-ink: #141310; $base-50: #F3F9FC; $base-100: #E0EEF5; $base-200: #C2DDEB; $base-300: #97C2D8; $base-400: #70A7C2; $base-500: #4E89A6; $base-600: #426B80; $base-700: #334E5C; $base-800: #24343C; $base-900: #182125; $base-hover: #307090; $base-subtle: #C7DCE6;
{
"color": {
"base": {
"value": "#3C8CB5",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3F9FC",
"type": "color"
},
"100": {
"value": "#E0EEF5",
"type": "color"
},
"200": {
"value": "#C2DDEB",
"type": "color"
},
"300": {
"value": "#97C2D8",
"type": "color"
},
"400": {
"value": "#70A7C2",
"type": "color"
},
"500": {
"value": "#4E89A6",
"type": "color"
},
"600": {
"value": "#426B80",
"type": "color"
},
"700": {
"value": "#334E5C",
"type": "color"
},
"800": {
"value": "#24343C",
"type": "color"
},
"900": {
"value": "#182125",
"type": "color"
}
}
}
}