#175444 is a mid-toned, cool teal. On the Color Lab it reads quietly premium, 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 #175444 works with other colors. Named schemes with #175444 in its natural role, and a note on why the supporting colors balance it.
Castleton Green opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Castleton Green keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Castleton 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.
Castleton 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.
Castleton 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 Castleton Green carrying the quiet middle.
How #175444 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 #175444 at work across the surfaces designers actually ship.
:root {
--color-base: #175444;
--color-base-rgb: 23 84 68;
--color-base-oklch: oklch(40.2% 0.067 171.8);
--color-50: #F3FCFA;
--color-100: #DEF7F0;
--color-200: #BFEDE1;
--color-300: #93DCC9;
--color-400: #6AC8AF;
--color-500: #48AD92;
--color-600: #3D8471;
--color-700: #305E52;
--color-800: #233E37;
--color-900: #172622;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
castleton-green: {
50: '#F3FCFA',
100: '#DEF7F0',
200: '#BFEDE1',
300: '#93DCC9',
400: '#6AC8AF',
500: '#48AD92',
600: '#3D8471',
700: '#305E52',
800: '#233E37',
900: '#172622',
},
}
$base: #175444; $base-ink: #FFFFFF; $base-50: #F3FCFA; $base-100: #DEF7F0; $base-200: #BFEDE1; $base-300: #93DCC9; $base-400: #6AC8AF; $base-500: #48AD92; $base-600: #3D8471; $base-700: #305E52; $base-800: #233E37; $base-900: #172622; $base-hover: #124336; $base-subtle: #A8DDCF;
{
"color": {
"base": {
"value": "#175444",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F3FCFA",
"type": "color"
},
"100": {
"value": "#DEF7F0",
"type": "color"
},
"200": {
"value": "#BFEDE1",
"type": "color"
},
"300": {
"value": "#93DCC9",
"type": "color"
},
"400": {
"value": "#6AC8AF",
"type": "color"
},
"500": {
"value": "#48AD92",
"type": "color"
},
"600": {
"value": "#3D8471",
"type": "color"
},
"700": {
"value": "#305E52",
"type": "color"
},
"800": {
"value": "#233E37",
"type": "color"
},
"900": {
"value": "#172622",
"type": "color"
}
}
}
}