#658489 is a muted, cool blue. On the Color Lab it reads clean and engineered, 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 #658489 works with other colors. Named schemes with #658489 in its natural role, and a note on why the supporting colors balance it.
Slate Gray opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Slate Gray keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
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 Slate Gray.
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.
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 Slate Gray carrying the quiet middle.
How #658489 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 #658489 at work across the surfaces designers actually ship.
:root {
--color-base: #658489;
--color-base-rgb: 101 132 137;
--color-base-oklch: oklch(59.1% 0.036 208.4);
--color-50: #F6F8F9;
--color-100: #E7EDEE;
--color-200: #D0DBDC;
--color-300: #AEBFC1;
--color-400: #8DA2A5;
--color-500: #6D8488;
--color-600: #58686A;
--color-700: #414C4D;
--color-800: #2D3334;
--color-900: #1D2021;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
slate-gray: {
50: '#F6F8F9',
100: '#E7EDEE',
200: '#D0DBDC',
300: '#AEBFC1',
400: '#8DA2A5',
500: '#6D8488',
600: '#58686A',
700: '#414C4D',
800: '#2D3334',
900: '#1D2021',
},
}
$base: #658489; $base-ink: #141310; $base-50: #F6F8F9; $base-100: #E7EDEE; $base-200: #D0DBDC; $base-300: #AEBFC1; $base-400: #8DA2A5; $base-500: #6D8488; $base-600: #58686A; $base-700: #414C4D; $base-800: #2D3334; $base-900: #1D2021; $base-hover: #516A6E; $base-subtle: #D2DADB;
{
"color": {
"base": {
"value": "#658489",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F6F8F9",
"type": "color"
},
"100": {
"value": "#E7EDEE",
"type": "color"
},
"200": {
"value": "#D0DBDC",
"type": "color"
},
"300": {
"value": "#AEBFC1",
"type": "color"
},
"400": {
"value": "#8DA2A5",
"type": "color"
},
"500": {
"value": "#6D8488",
"type": "color"
},
"600": {
"value": "#58686A",
"type": "color"
},
"700": {
"value": "#414C4D",
"type": "color"
},
"800": {
"value": "#2D3334",
"type": "color"
},
"900": {
"value": "#1D2021",
"type": "color"
}
}
}
}