#3FC0CC is a mid-toned, cool cyan-blue. On the Color Lab it reads clean and engineered. It sits well as a supporting tone.
Not just a swatch — here's how #3FC0CC works with other colors. Named schemes with #3FC0CC in its natural role, and a note on why the supporting colors balance it.
Lagoon Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Lagoon Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Lagoon 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 Lagoon Blue.
Lagoon 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 Lagoon Blue carrying the quiet middle.
Lagoon 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 #3FC0CC 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 #3FC0CC at work across the surfaces designers actually ship.
:root {
--color-base: #3FC0CC;
--color-base-rgb: 63 192 204;
--color-base-oklch: oklch(74.4% 0.110 204.1);
--color-50: #F2FBFC;
--color-100: #DEF5F7;
--color-200: #BFEAEE;
--color-300: #92D7DD;
--color-400: #69C1C9;
--color-500: #47A5AD;
--color-600: #3D7F85;
--color-700: #305B5F;
--color-800: #233C3E;
--color-900: #172526;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
lagoon-blue: {
50: '#F2FBFC',
100: '#DEF5F7',
200: '#BFEAEE',
300: '#92D7DD',
400: '#69C1C9',
500: '#47A5AD',
600: '#3D7F85',
700: '#305B5F',
800: '#233C3E',
900: '#172526',
},
}
$base: #3FC0CC; $base-ink: #141310; $base-50: #F2FBFC; $base-100: #DEF5F7; $base-200: #BFEAEE; $base-300: #92D7DD; $base-400: #69C1C9; $base-500: #47A5AD; $base-600: #3D7F85; $base-700: #305B5F; $base-800: #233C3E; $base-900: #172526; $base-hover: #2D9DA8; $base-subtle: #CAE8EA;
{
"color": {
"base": {
"value": "#3FC0CC",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F2FBFC",
"type": "color"
},
"100": {
"value": "#DEF5F7",
"type": "color"
},
"200": {
"value": "#BFEAEE",
"type": "color"
},
"300": {
"value": "#92D7DD",
"type": "color"
},
"400": {
"value": "#69C1C9",
"type": "color"
},
"500": {
"value": "#47A5AD",
"type": "color"
},
"600": {
"value": "#3D7F85",
"type": "color"
},
"700": {
"value": "#305B5F",
"type": "color"
},
"800": {
"value": "#233C3E",
"type": "color"
},
"900": {
"value": "#172526",
"type": "color"
}
}
}
}