#4878A8 is a mid-toned, cool indigo. On the Color Lab it reads clean and engineered, with a faded, vintage edge. It carries a legible label as a UI accent and reproduces cleanly in print.
Not just a swatch — here's how #4878A8 works with other colors. Named schemes with #4878A8 in its natural role, and a note on why the supporting colors balance it.
Steel Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Steel Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Steel Blue is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Steel Blue.
Steel Blue plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Steel Blue 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 Steel Blue carrying the quiet middle.
How #4878A8 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 #4878A8 at work across the surfaces designers actually ship.
:root {
--color-base: #4878A8;
--color-base-rgb: 72 120 168;
--color-base-oklch: oklch(56.0% 0.092 249.8);
--color-50: #F4F7FB;
--color-100: #E2EBF3;
--color-200: #C6D6E6;
--color-300: #9EB8D1;
--color-400: #7899BA;
--color-500: #577A9E;
--color-600: #48617A;
--color-700: #374758;
--color-800: #27303A;
--color-900: #191F24;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
steel-blue: {
50: '#F4F7FB',
100: '#E2EBF3',
200: '#C6D6E6',
300: '#9EB8D1',
400: '#7899BA',
500: '#577A9E',
600: '#48617A',
700: '#374758',
800: '#27303A',
900: '#191F24',
},
}
$base: #4878A8; $base-ink: #FFFFFF; $base-50: #F4F7FB; $base-100: #E2EBF3; $base-200: #C6D6E6; $base-300: #9EB8D1; $base-400: #7899BA; $base-500: #577A9E; $base-600: #48617A; $base-700: #374758; $base-800: #27303A; $base-900: #191F24; $base-hover: #3A6086; $base-subtle: #CAD6E3;
{
"color": {
"base": {
"value": "#4878A8",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F4F7FB",
"type": "color"
},
"100": {
"value": "#E2EBF3",
"type": "color"
},
"200": {
"value": "#C6D6E6",
"type": "color"
},
"300": {
"value": "#9EB8D1",
"type": "color"
},
"400": {
"value": "#7899BA",
"type": "color"
},
"500": {
"value": "#577A9E",
"type": "color"
},
"600": {
"value": "#48617A",
"type": "color"
},
"700": {
"value": "#374758",
"type": "color"
},
"800": {
"value": "#27303A",
"type": "color"
},
"900": {
"value": "#191F24",
"type": "color"
}
}
}
}