#3DA4BC 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 #3DA4BC works with other colors. Named schemes with #3DA4BC in its natural role, and a note on why the supporting colors balance it.
Cadet Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Cadet Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Cadet 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 Cadet Blue.
Cadet 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 Cadet Blue carrying the quiet middle.
Cadet 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 #3DA4BC 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 #3DA4BC at work across the surfaces designers actually ship.
:root {
--color-base: #3DA4BC;
--color-base-rgb: 61 164 188;
--color-base-oklch: oklch(66.9% 0.099 216.2);
--color-50: #F3FAFC;
--color-100: #E0F2F6;
--color-200: #C1E3EB;
--color-300: #97CCD9;
--color-400: #6FB4C3;
--color-500: #4E97A7;
--color-600: #417581;
--color-700: #33545C;
--color-800: #24383D;
--color-900: #182326;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
cadet-blue: {
50: '#F3FAFC',
100: '#E0F2F6',
200: '#C1E3EB',
300: '#97CCD9',
400: '#6FB4C3',
500: '#4E97A7',
600: '#417581',
700: '#33545C',
800: '#24383D',
900: '#182326',
},
}
$base: #3DA4BC; $base-ink: #141310; $base-50: #F3FAFC; $base-100: #E0F2F6; $base-200: #C1E3EB; $base-300: #97CCD9; $base-400: #6FB4C3; $base-500: #4E97A7; $base-600: #417581; $base-700: #33545C; $base-800: #24383D; $base-900: #182326; $base-hover: #318497; $base-subtle: #C9E2E7;
{
"color": {
"base": {
"value": "#3DA4BC",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3FAFC",
"type": "color"
},
"100": {
"value": "#E0F2F6",
"type": "color"
},
"200": {
"value": "#C1E3EB",
"type": "color"
},
"300": {
"value": "#97CCD9",
"type": "color"
},
"400": {
"value": "#6FB4C3",
"type": "color"
},
"500": {
"value": "#4E97A7",
"type": "color"
},
"600": {
"value": "#417581",
"type": "color"
},
"700": {
"value": "#33545C",
"type": "color"
},
"800": {
"value": "#24383D",
"type": "color"
},
"900": {
"value": "#182326",
"type": "color"
}
}
}
}