#39ACAA is a mid-toned, cool cyan. 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 #39ACAA works with other colors. Named schemes with #39ACAA in its natural role, and a note on why the supporting colors balance it.
Light Sea Green opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Light Sea Green keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Light Sea Green 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 Light Sea Green carrying the quiet middle.
Light Sea Green is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Light Sea Green.
Light Sea Green 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 #39ACAA 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 #39ACAA at work across the surfaces designers actually ship.
:root {
--color-base: #39ACAA;
--color-base-rgb: 57 172 170;
--color-base-oklch: oklch(68.1% 0.101 193.4);
--color-50: #F3FCFB;
--color-100: #E0F5F5;
--color-200: #C2EBEA;
--color-300: #97D8D7;
--color-400: #70C2C1;
--color-500: #4EA6A5;
--color-600: #42807F;
--color-700: #335C5B;
--color-800: #243C3C;
--color-900: #182525;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
light-sea-green: {
50: '#F3FCFB',
100: '#E0F5F5',
200: '#C2EBEA',
300: '#97D8D7',
400: '#70C2C1',
500: '#4EA6A5',
600: '#42807F',
700: '#335C5B',
800: '#243C3C',
900: '#182525',
},
}
$base: #39ACAA; $base-ink: #141310; $base-50: #F3FCFB; $base-100: #E0F5F5; $base-200: #C2EBEA; $base-300: #97D8D7; $base-400: #70C2C1; $base-500: #4EA6A5; $base-600: #42807F; $base-700: #335C5B; $base-800: #243C3C; $base-900: #182525; $base-hover: #2E8A88; $base-subtle: #C5E5E4;
{
"color": {
"base": {
"value": "#39ACAA",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3FCFB",
"type": "color"
},
"100": {
"value": "#E0F5F5",
"type": "color"
},
"200": {
"value": "#C2EBEA",
"type": "color"
},
"300": {
"value": "#97D8D7",
"type": "color"
},
"400": {
"value": "#70C2C1",
"type": "color"
},
"500": {
"value": "#4EA6A5",
"type": "color"
},
"600": {
"value": "#42807F",
"type": "color"
},
"700": {
"value": "#335C5B",
"type": "color"
},
"800": {
"value": "#243C3C",
"type": "color"
},
"900": {
"value": "#182525",
"type": "color"
}
}
}
}