#2A4C72 is a mid-toned, cool indigo. On the Color Lab it reads clean and engineered, quietly premium. It carries a legible label as a UI accent and reproduces cleanly in print.
Not just a swatch — here's how #2A4C72 works with other colors. Named schemes with #2A4C72 in its natural role, and a note on why the supporting colors balance it.
Classic Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Classic Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Classic 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 Classic Blue.
Classic 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.
Classic 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 Classic Blue carrying the quiet middle.
How #2A4C72 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 #2A4C72 at work across the surfaces designers actually ship.
:root {
--color-base: #2A4C72;
--color-base-rgb: 42 76 114;
--color-base-oklch: oklch(40.9% 0.076 252.5);
--color-50: #F3F7FB;
--color-100: #E1EAF5;
--color-200: #C4D5E9;
--color-300: #9AB6D5;
--color-400: #7396BF;
--color-500: #5278A3;
--color-600: #445F7E;
--color-700: #35465A;
--color-800: #25303C;
--color-900: #181E25;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
classic-blue: {
50: '#F3F7FB',
100: '#E1EAF5',
200: '#C4D5E9',
300: '#9AB6D5',
400: '#7396BF',
500: '#5278A3',
600: '#445F7E',
700: '#35465A',
800: '#25303C',
900: '#181E25',
},
}
$base: #2A4C72; $base-ink: #FFFFFF; $base-50: #F3F7FB; $base-100: #E1EAF5; $base-200: #C4D5E9; $base-300: #9AB6D5; $base-400: #7396BF; $base-500: #5278A3; $base-600: #445F7E; $base-700: #35465A; $base-800: #25303C; $base-900: #181E25; $base-hover: #223D5C; $base-subtle: #B8C9DD;
{
"color": {
"base": {
"value": "#2A4C72",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F3F7FB",
"type": "color"
},
"100": {
"value": "#E1EAF5",
"type": "color"
},
"200": {
"value": "#C4D5E9",
"type": "color"
},
"300": {
"value": "#9AB6D5",
"type": "color"
},
"400": {
"value": "#7396BF",
"type": "color"
},
"500": {
"value": "#5278A3",
"type": "color"
},
"600": {
"value": "#445F7E",
"type": "color"
},
"700": {
"value": "#35465A",
"type": "color"
},
"800": {
"value": "#25303C",
"type": "color"
},
"900": {
"value": "#181E25",
"type": "color"
}
}
}
}