#348C8A is a mid-toned, cool cyan. On the Color Lab it reads clean and engineered, with a faded, vintage edge. It carries a legible label as a UI accent and reproduces cleanly in print.
Not just a swatch — here's how #348C8A works with other colors. Named schemes with #348C8A in its natural role, and a note on why the supporting colors balance it.
Dark Cyan opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Dark Cyan keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Dark Cyan plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Dark Cyan 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.
Dark Cyan 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 Dark Cyan carrying the quiet middle.
How #348C8A 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 #348C8A at work across the surfaces designers actually ship.
:root {
--color-base: #348C8A;
--color-base-rgb: 52 140 138;
--color-base-oklch: oklch(58.8% 0.083 193.0);
--color-50: #F3FBFB;
--color-100: #E1F5F4;
--color-200: #C4E9E8;
--color-300: #9AD5D4;
--color-400: #73BFBE;
--color-500: #52A3A2;
--color-600: #447E7D;
--color-700: #355A59;
--color-800: #253C3B;
--color-900: #182525;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
dark-cyan: {
50: '#F3FBFB',
100: '#E1F5F4',
200: '#C4E9E8',
300: '#9AD5D4',
400: '#73BFBE',
500: '#52A3A2',
600: '#447E7D',
700: '#355A59',
800: '#253C3B',
900: '#182525',
},
}
$base: #348C8A; $base-ink: #141310; $base-50: #F3FBFB; $base-100: #E1F5F4; $base-200: #C4E9E8; $base-300: #9AD5D4; $base-400: #73BFBE; $base-500: #52A3A2; $base-600: #447E7D; $base-700: #355A59; $base-800: #253C3B; $base-900: #182525; $base-hover: #2A7170; $base-subtle: #BFE0E0;
{
"color": {
"base": {
"value": "#348C8A",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3FBFB",
"type": "color"
},
"100": {
"value": "#E1F5F4",
"type": "color"
},
"200": {
"value": "#C4E9E8",
"type": "color"
},
"300": {
"value": "#9AD5D4",
"type": "color"
},
"400": {
"value": "#73BFBE",
"type": "color"
},
"500": {
"value": "#52A3A2",
"type": "color"
},
"600": {
"value": "#447E7D",
"type": "color"
},
"700": {
"value": "#355A59",
"type": "color"
},
"800": {
"value": "#253C3B",
"type": "color"
},
"900": {
"value": "#182525",
"type": "color"
}
}
}
}