#455759 is a muted, temperate cyan-blue. On the Color Lab it reads clean and engineered, restrained and easy to live with. It reproduces cleanly in print.
Not just a swatch — here's how #455759 works with other colors. Named schemes with #455759 in its natural role, and a note on why the supporting colors balance it.
Iron Gray opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Iron Gray keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Iron 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 Iron Gray.
Iron 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.
Iron 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 Iron Gray carrying the quiet middle.
How #455759 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 #455759 at work across the surfaces designers actually ship.
:root {
--color-base: #455759;
--color-base-rgb: 69 87 89;
--color-base-oklch: oklch(44.2% 0.022 204.7);
--color-50: #F6F8F8;
--color-100: #E8EDED;
--color-200: #D1DADB;
--color-300: #AFBEC0;
--color-400: #8EA2A4;
--color-500: #6F8486;
--color-600: #596769;
--color-700: #424C4D;
--color-800: #2D3334;
--color-900: #1D2020;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
iron-gray: {
50: '#F6F8F8',
100: '#E8EDED',
200: '#D1DADB',
300: '#AFBEC0',
400: '#8EA2A4',
500: '#6F8486',
600: '#596769',
700: '#424C4D',
800: '#2D3334',
900: '#1D2020',
},
}
$base: #455759; $base-ink: #FFFFFF; $base-50: #F6F8F8; $base-100: #E8EDED; $base-200: #D1DADB; $base-300: #AFBEC0; $base-400: #8EA2A4; $base-500: #6F8486; $base-600: #596769; $base-700: #424C4D; $base-800: #2D3334; $base-900: #1D2020; $base-hover: #374647; $base-subtle: #C5CECF;
{
"color": {
"base": {
"value": "#455759",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F6F8F8",
"type": "color"
},
"100": {
"value": "#E8EDED",
"type": "color"
},
"200": {
"value": "#D1DADB",
"type": "color"
},
"300": {
"value": "#AFBEC0",
"type": "color"
},
"400": {
"value": "#8EA2A4",
"type": "color"
},
"500": {
"value": "#6F8486",
"type": "color"
},
"600": {
"value": "#596769",
"type": "color"
},
"700": {
"value": "#424C4D",
"type": "color"
},
"800": {
"value": "#2D3334",
"type": "color"
},
"900": {
"value": "#1D2020",
"type": "color"
}
}
}
}