#173F41 is a muted, cool cyan-blue. On the Color Lab it reads clean and engineered, quietly premium. It reproduces cleanly in print.
Not just a swatch — here's how #173F41 works with other colors. Named schemes with #173F41 in its natural role, and a note on why the supporting colors balance it.
Bottle Green opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Bottle Green keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Bottle Green plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Bottle Green carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.
Bottle 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 Bottle Green carrying the quiet middle.
How #173F41 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 #173F41 at work across the surfaces designers actually ship.
:root {
--color-base: #173F41;
--color-base-rgb: 23 63 65;
--color-base-oklch: oklch(34.0% 0.045 199.8);
--color-50: #F3FBFB;
--color-100: #E0F4F5;
--color-200: #C3E8EA;
--color-300: #99D3D7;
--color-400: #71BDC1;
--color-500: #50A0A5;
--color-600: #437C7F;
--color-700: #34595B;
--color-800: #253B3C;
--color-900: #182425;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
bottle-green: {
50: '#F3FBFB',
100: '#E0F4F5',
200: '#C3E8EA',
300: '#99D3D7',
400: '#71BDC1',
500: '#50A0A5',
600: '#437C7F',
700: '#34595B',
800: '#253B3C',
900: '#182425',
},
}
$base: #173F41; $base-ink: #FFFFFF; $base-50: #F3FBFB; $base-100: #E0F4F5; $base-200: #C3E8EA; $base-300: #99D3D7; $base-400: #71BDC1; $base-500: #50A0A5; $base-600: #437C7F; $base-700: #34595B; $base-800: #253B3C; $base-900: #182425; $base-hover: #123233; $base-subtle: #A8D4D7;
{
"color": {
"base": {
"value": "#173F41",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F3FBFB",
"type": "color"
},
"100": {
"value": "#E0F4F5",
"type": "color"
},
"200": {
"value": "#C3E8EA",
"type": "color"
},
"300": {
"value": "#99D3D7",
"type": "color"
},
"400": {
"value": "#71BDC1",
"type": "color"
},
"500": {
"value": "#50A0A5",
"type": "color"
},
"600": {
"value": "#437C7F",
"type": "color"
},
"700": {
"value": "#34595B",
"type": "color"
},
"800": {
"value": "#253B3C",
"type": "color"
},
"900": {
"value": "#182425",
"type": "color"
}
}
}
}