#285B54 is a mid-toned, cool cyan. 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 #285B54 works with other colors. Named schemes with #285B54 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 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 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.
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 #285B54 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 #285B54 at work across the surfaces designers actually ship.
:root {
--color-base: #285B54;
--color-base-rgb: 40 91 84;
--color-base-oklch: oklch(43.4% 0.056 183.5);
--color-50: #F4FBFA;
--color-100: #E2F3F1;
--color-200: #C6E6E2;
--color-300: #9ED1CA;
--color-400: #79B9B1;
--color-500: #589D94;
--color-600: #497973;
--color-700: #385753;
--color-800: #273A37;
--color-900: #192422;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
dark-slate-gray: {
50: '#F4FBFA',
100: '#E2F3F1',
200: '#C6E6E2',
300: '#9ED1CA',
400: '#79B9B1',
500: '#589D94',
600: '#497973',
700: '#385753',
800: '#273A37',
900: '#192422',
},
}
$base: #285B54; $base-ink: #FFFFFF; $base-50: #F4FBFA; $base-100: #E2F3F1; $base-200: #C6E6E2; $base-300: #9ED1CA; $base-400: #79B9B1; $base-500: #589D94; $base-600: #497973; $base-700: #385753; $base-800: #273A37; $base-900: #192422; $base-hover: #204A44; $base-subtle: #B6D7D3;
{
"color": {
"base": {
"value": "#285B54",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F4FBFA",
"type": "color"
},
"100": {
"value": "#E2F3F1",
"type": "color"
},
"200": {
"value": "#C6E6E2",
"type": "color"
},
"300": {
"value": "#9ED1CA",
"type": "color"
},
"400": {
"value": "#79B9B1",
"type": "color"
},
"500": {
"value": "#589D94",
"type": "color"
},
"600": {
"value": "#497973",
"type": "color"
},
"700": {
"value": "#385753",
"type": "color"
},
"800": {
"value": "#273A37",
"type": "color"
},
"900": {
"value": "#192422",
"type": "color"
}
}
}
}