#3C84E2 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 #3C84E2 works with other colors. Named schemes with #3C84E2 in its natural role, and a note on why the supporting colors balance it.
Signal Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Signal 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 Signal Blue.
Signal 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.
Signal Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
Signal 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 Signal Blue carrying the quiet middle.
How #3C84E2 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 #3C84E2 at work across the surfaces designers actually ship.
:root {
--color-base: #3C84E2;
--color-base-rgb: 60 132 226;
--color-base-oklch: oklch(61.5% 0.160 256.3);
--color-50: #F1F7FE;
--color-100: #DBE8FB;
--color-200: #B8D2F4;
--color-300: #88B1E7;
--color-400: #5C91D6;
--color-500: #3972BC;
--color-600: #335B8F;
--color-700: #2A4365;
--color-800: #1F2E42;
--color-900: #151D29;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
signal-blue: {
50: '#F1F7FE',
100: '#DBE8FB',
200: '#B8D2F4',
300: '#88B1E7',
400: '#5C91D6',
500: '#3972BC',
600: '#335B8F',
700: '#2A4365',
800: '#1F2E42',
900: '#151D29',
},
}
$base: #3C84E2; $base-ink: #141310; $base-50: #F1F7FE; $base-100: #DBE8FB; $base-200: #B8D2F4; $base-300: #88B1E7; $base-400: #5C91D6; $base-500: #3972BC; $base-600: #335B8F; $base-700: #2A4365; $base-800: #1F2E42; $base-900: #151D29; $base-hover: #1E67C7; $base-subtle: #CADBF0;
{
"color": {
"base": {
"value": "#3C84E2",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F1F7FE",
"type": "color"
},
"100": {
"value": "#DBE8FB",
"type": "color"
},
"200": {
"value": "#B8D2F4",
"type": "color"
},
"300": {
"value": "#88B1E7",
"type": "color"
},
"400": {
"value": "#5C91D6",
"type": "color"
},
"500": {
"value": "#3972BC",
"type": "color"
},
"600": {
"value": "#335B8F",
"type": "color"
},
"700": {
"value": "#2A4365",
"type": "color"
},
"800": {
"value": "#1F2E42",
"type": "color"
},
"900": {
"value": "#151D29",
"type": "color"
}
}
}
}