#488BB5 is a mid-toned, cool blue. 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 #488BB5 works with other colors. Named schemes with #488BB5 in its natural role, and a note on why the supporting colors balance it.
Ocean Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Ocean 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 Ocean Blue.
Ocean 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.
Ocean Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
Ocean 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 Ocean Blue carrying the quiet middle.
How #488BB5 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 #488BB5 at work across the surfaces designers actually ship.
:root {
--color-base: #488BB5;
--color-base-rgb: 72 139 181;
--color-base-oklch: oklch(61.0% 0.093 238.4);
--color-50: #F4F8FB;
--color-100: #E1EDF4;
--color-200: #C5DAE8;
--color-300: #9CBED3;
--color-400: #75A1BD;
--color-500: #5583A0;
--color-600: #46677C;
--color-700: #364B59;
--color-800: #26333B;
--color-900: #192024;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
ocean-blue: {
50: '#F4F8FB',
100: '#E1EDF4',
200: '#C5DAE8',
300: '#9CBED3',
400: '#75A1BD',
500: '#5583A0',
600: '#46677C',
700: '#364B59',
800: '#26333B',
900: '#192024',
},
}
$base: #488BB5; $base-ink: #141310; $base-50: #F4F8FB; $base-100: #E1EDF4; $base-200: #C5DAE8; $base-300: #9CBED3; $base-400: #75A1BD; $base-500: #5583A0; $base-600: #46677C; $base-700: #364B59; $base-800: #26333B; $base-900: #192024; $base-hover: #3A7092; $base-subtle: #CCDCE5;
{
"color": {
"base": {
"value": "#488BB5",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F4F8FB",
"type": "color"
},
"100": {
"value": "#E1EDF4",
"type": "color"
},
"200": {
"value": "#C5DAE8",
"type": "color"
},
"300": {
"value": "#9CBED3",
"type": "color"
},
"400": {
"value": "#75A1BD",
"type": "color"
},
"500": {
"value": "#5583A0",
"type": "color"
},
"600": {
"value": "#46677C",
"type": "color"
},
"700": {
"value": "#364B59",
"type": "color"
},
"800": {
"value": "#26333B",
"type": "color"
},
"900": {
"value": "#192024",
"type": "color"
}
}
}
}