#4888CB is a mid-toned, cool indigo. On the Color Lab it reads clean and engineered. It carries a legible label as a UI accent and sits well as a supporting tone.
Not just a swatch — here's how #4888CB works with other colors. Named schemes with #4888CB 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 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 sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
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 #4888CB 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 #4888CB at work across the surfaces designers actually ship.
:root {
--color-base: #4888CB;
--color-base-rgb: 72 136 203;
--color-base-oklch: oklch(61.5% 0.122 251.4);
--color-50: #F3F7FC;
--color-100: #DFEAF7;
--color-200: #BFD5ED;
--color-300: #93B6DC;
--color-400: #6B97C7;
--color-500: #4979AC;
--color-600: #3E6084;
--color-700: #31475E;
--color-800: #23303E;
--color-900: #171E26;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
steel-blue: {
50: '#F3F7FC',
100: '#DFEAF7',
200: '#BFD5ED',
300: '#93B6DC',
400: '#6B97C7',
500: '#4979AC',
600: '#3E6084',
700: '#31475E',
800: '#23303E',
900: '#171E26',
},
}
$base: #4888CB; $base-ink: #141310; $base-50: #F3F7FC; $base-100: #DFEAF7; $base-200: #BFD5ED; $base-300: #93B6DC; $base-400: #6B97C7; $base-500: #4979AC; $base-600: #3E6084; $base-700: #31475E; $base-800: #23303E; $base-900: #171E26; $base-hover: #306CAC; $base-subtle: #CDDBEB;
{
"color": {
"base": {
"value": "#4888CB",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3F7FC",
"type": "color"
},
"100": {
"value": "#DFEAF7",
"type": "color"
},
"200": {
"value": "#BFD5ED",
"type": "color"
},
"300": {
"value": "#93B6DC",
"type": "color"
},
"400": {
"value": "#6B97C7",
"type": "color"
},
"500": {
"value": "#4979AC",
"type": "color"
},
"600": {
"value": "#3E6084",
"type": "color"
},
"700": {
"value": "#31475E",
"type": "color"
},
"800": {
"value": "#23303E",
"type": "color"
},
"900": {
"value": "#171E26",
"type": "color"
}
}
}
}