#3DB9DB is a mid-toned, cool blue. On the Color Lab it reads clean and engineered. It sits well as a supporting tone.
Not just a swatch — here's how #3DB9DB works with other colors. Named schemes with #3DB9DB in its natural role, and a note on why the supporting colors balance it.
Picton Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Picton Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Picton 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 Picton Blue.
Picton 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 Picton Blue carrying the quiet middle.
Picton 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 #3DB9DB 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 #3DB9DB at work across the surfaces designers actually ship.
:root {
--color-base: #3DB9DB;
--color-base-rgb: 61 185 219;
--color-base-oklch: oklch(73.2% 0.116 220.2);
--color-50: #F2FBFD;
--color-100: #DCF3F9;
--color-200: #BAE6F2;
--color-300: #8BD1E4;
--color-400: #60B9D2;
--color-500: #3E9DB7;
--color-600: #36798C;
--color-700: #2C5763;
--color-800: #203A41;
--color-900: #152428;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
picton-blue: {
50: '#F2FBFD',
100: '#DCF3F9',
200: '#BAE6F2',
300: '#8BD1E4',
400: '#60B9D2',
500: '#3E9DB7',
600: '#36798C',
700: '#2C5763',
800: '#203A41',
900: '#152428',
},
}
$base: #3DB9DB; $base-ink: #141310; $base-50: #F2FBFD; $base-100: #DCF3F9; $base-200: #BAE6F2; $base-300: #8BD1E4; $base-400: #60B9D2; $base-500: #3E9DB7; $base-600: #36798C; $base-700: #2C5763; $base-800: #203A41; $base-900: #152428; $base-hover: #239CBE; $base-subtle: #CBE7EF;
{
"color": {
"base": {
"value": "#3DB9DB",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F2FBFD",
"type": "color"
},
"100": {
"value": "#DCF3F9",
"type": "color"
},
"200": {
"value": "#BAE6F2",
"type": "color"
},
"300": {
"value": "#8BD1E4",
"type": "color"
},
"400": {
"value": "#60B9D2",
"type": "color"
},
"500": {
"value": "#3E9DB7",
"type": "color"
},
"600": {
"value": "#36798C",
"type": "color"
},
"700": {
"value": "#2C5763",
"type": "color"
},
"800": {
"value": "#203A41",
"type": "color"
},
"900": {
"value": "#152428",
"type": "color"
}
}
}
}