#205665 is a mid-toned, cool blue. On the Color Lab it reads clean and engineered, quietly premium. It carries a legible label as a UI accent and reproduces cleanly in print.
Not just a swatch — here's how #205665 works with other colors. Named schemes with #205665 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 #205665 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 #205665 at work across the surfaces designers actually ship.
:root {
--color-base: #205665;
--color-base-rgb: 32 86 101;
--color-base-oklch: oklch(42.4% 0.061 219.3);
--color-50: #F3FAFC;
--color-100: #DFF1F6;
--color-200: #C1E2EB;
--color-300: #96CBD9;
--color-400: #6EB1C4;
--color-500: #4D94A8;
--color-600: #417381;
--color-700: #32535C;
--color-800: #24383D;
--color-900: #182326;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
dark-slate-gray: {
50: '#F3FAFC',
100: '#DFF1F6',
200: '#C1E2EB',
300: '#96CBD9',
400: '#6EB1C4',
500: '#4D94A8',
600: '#417381',
700: '#32535C',
800: '#24383D',
900: '#182326',
},
}
$base: #205665; $base-ink: #FFFFFF; $base-50: #F3FAFC; $base-100: #DFF1F6; $base-200: #C1E2EB; $base-300: #96CBD9; $base-400: #6EB1C4; $base-500: #4D94A8; $base-600: #417381; $base-700: #32535C; $base-800: #24383D; $base-900: #182326; $base-hover: #194551; $base-subtle: #B0D3DD;
{
"color": {
"base": {
"value": "#205665",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F3FAFC",
"type": "color"
},
"100": {
"value": "#DFF1F6",
"type": "color"
},
"200": {
"value": "#C1E2EB",
"type": "color"
},
"300": {
"value": "#96CBD9",
"type": "color"
},
"400": {
"value": "#6EB1C4",
"type": "color"
},
"500": {
"value": "#4D94A8",
"type": "color"
},
"600": {
"value": "#417381",
"type": "color"
},
"700": {
"value": "#32535C",
"type": "color"
},
"800": {
"value": "#24383D",
"type": "color"
},
"900": {
"value": "#182326",
"type": "color"
}
}
}
}