#397D91 is a mid-toned, cool blue. On the Color Lab it reads clean and engineered, restrained and easy to live with. It carries a legible label as a UI accent and reproduces cleanly in print.
Not just a swatch — here's how #397D91 works with other colors. Named schemes with #397D91 in its natural role, and a note on why the supporting colors balance it.
Teal Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Teal Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Teal 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 Teal Blue.
Teal Blue plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Teal 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 Teal Blue carrying the quiet middle.
How #397D91 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 #397D91 at work across the surfaces designers actually ship.
:root {
--color-base: #397D91;
--color-base-rgb: 57 125 145;
--color-base-oklch: oklch(55.4% 0.075 219.9);
--color-50: #F4F9FB;
--color-100: #E1F0F4;
--color-200: #C4E0E8;
--color-300: #9BC7D4;
--color-400: #75ACBD;
--color-500: #548FA1;
--color-600: #46707C;
--color-700: #365159;
--color-800: #26363B;
--color-900: #192225;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
teal-blue: {
50: '#F4F9FB',
100: '#E1F0F4',
200: '#C4E0E8',
300: '#9BC7D4',
400: '#75ACBD',
500: '#548FA1',
600: '#46707C',
700: '#365159',
800: '#26363B',
900: '#192225',
},
}
$base: #397D91; $base-ink: #FFFFFF; $base-50: #F4F9FB; $base-100: #E1F0F4; $base-200: #C4E0E8; $base-300: #9BC7D4; $base-400: #75ACBD; $base-500: #548FA1; $base-600: #46707C; $base-700: #365159; $base-800: #26363B; $base-900: #192225; $base-hover: #2E6576; $base-subtle: #C2D9E0;
{
"color": {
"base": {
"value": "#397D91",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F4F9FB",
"type": "color"
},
"100": {
"value": "#E1F0F4",
"type": "color"
},
"200": {
"value": "#C4E0E8",
"type": "color"
},
"300": {
"value": "#9BC7D4",
"type": "color"
},
"400": {
"value": "#75ACBD",
"type": "color"
},
"500": {
"value": "#548FA1",
"type": "color"
},
"600": {
"value": "#46707C",
"type": "color"
},
"700": {
"value": "#365159",
"type": "color"
},
"800": {
"value": "#26363B",
"type": "color"
},
"900": {
"value": "#192225",
"type": "color"
}
}
}
}