#4248CD is a mid-toned, cool violet. On the Color Lab it reads clean and engineered, bold and ownable. It carries a legible label as a UI accent and sits well as a supporting tone.
Not just a swatch — here's how #4248CD works with other colors. Named schemes with #4248CD in its natural role, and a note on why the supporting colors balance it.
Cerulean is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Cerulean.
Cerulean opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Cerulean sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
Cerulean 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 Cerulean carrying the quiet middle.
Cerulean glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.
How #4248CD 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 #4248CD at work across the surfaces designers actually ship.
:root {
--color-base: #4248CD;
--color-base-rgb: 66 72 205;
--color-base-oklch: oklch(48.4% 0.201 274.0);
--color-50: #F2F3FC;
--color-100: #DEDFF7;
--color-200: #BFC1EE;
--color-300: #9296DD;
--color-400: #696EC9;
--color-500: #474CAD;
--color-600: #3D4085;
--color-700: #30325F;
--color-800: #23243E;
--color-900: #171826;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
cerulean: {
50: '#F2F3FC',
100: '#DEDFF7',
200: '#BFC1EE',
300: '#9296DD',
400: '#696EC9',
500: '#474CAD',
600: '#3D4085',
700: '#30325F',
800: '#23243E',
900: '#171826',
},
}
$base: #4248CD; $base-ink: #FFFFFF; $base-50: #F2F3FC; $base-100: #DEDFF7; $base-200: #BFC1EE; $base-300: #9296DD; $base-400: #696EC9; $base-500: #474CAD; $base-600: #3D4085; $base-700: #30325F; $base-800: #23243E; $base-900: #171826; $base-hover: #2D34AB; $base-subtle: #CBCDEB;
{
"color": {
"base": {
"value": "#4248CD",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F2F3FC",
"type": "color"
},
"100": {
"value": "#DEDFF7",
"type": "color"
},
"200": {
"value": "#BFC1EE",
"type": "color"
},
"300": {
"value": "#9296DD",
"type": "color"
},
"400": {
"value": "#696EC9",
"type": "color"
},
"500": {
"value": "#474CAD",
"type": "color"
},
"600": {
"value": "#3D4085",
"type": "color"
},
"700": {
"value": "#30325F",
"type": "color"
},
"800": {
"value": "#23243E",
"type": "color"
},
"900": {
"value": "#171826",
"type": "color"
}
}
}
}