#375360 is a muted, cool blue. On the Color Lab it reads clean and engineered, quietly premium. It reproduces cleanly in print.
Not just a swatch — here's how #375360 works with other colors. Named schemes with #375360 in its natural role, and a note on why the supporting colors balance it.
Dark Slate Gray opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Dark Slate Gray keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Dark Slate Gray is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Dark Slate Gray.
Dark Slate Gray plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Dark Slate Gray 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 Dark Slate Gray carrying the quiet middle.
How #375360 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 #375360 at work across the surfaces designers actually ship.
:root {
--color-base: #375360;
--color-base-rgb: 55 83 96;
--color-base-oklch: oklch(42.5% 0.040 228.7);
--color-50: #F5F8FA;
--color-100: #E5EDF0;
--color-200: #CBDAE1;
--color-300: #A6BEC9;
--color-400: #83A1AF;
--color-500: #638392;
--color-600: #506772;
--color-700: #3D4B52;
--color-800: #2A3337;
--color-900: #1B2022;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
dark-slate-gray: {
50: '#F5F8FA',
100: '#E5EDF0',
200: '#CBDAE1',
300: '#A6BEC9',
400: '#83A1AF',
500: '#638392',
600: '#506772',
700: '#3D4B52',
800: '#2A3337',
900: '#1B2022',
},
}
$base: #375360; $base-ink: #FFFFFF; $base-50: #F5F8FA; $base-100: #E5EDF0; $base-200: #CBDAE1; $base-300: #A6BEC9; $base-400: #83A1AF; $base-500: #638392; $base-600: #506772; $base-700: #3D4B52; $base-800: #2A3337; $base-900: #1B2022; $base-hover: #2D434E; $base-subtle: #BECDD4;
{
"color": {
"base": {
"value": "#375360",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F5F8FA",
"type": "color"
},
"100": {
"value": "#E5EDF0",
"type": "color"
},
"200": {
"value": "#CBDAE1",
"type": "color"
},
"300": {
"value": "#A6BEC9",
"type": "color"
},
"400": {
"value": "#83A1AF",
"type": "color"
},
"500": {
"value": "#638392",
"type": "color"
},
"600": {
"value": "#506772",
"type": "color"
},
"700": {
"value": "#3D4B52",
"type": "color"
},
"800": {
"value": "#2A3337",
"type": "color"
},
"900": {
"value": "#1B2022",
"type": "color"
}
}
}
}