#3E83EA 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 #3E83EA works with other colors. Named schemes with #3E83EA 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 #3E83EA 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 #3E83EA at work across the surfaces designers actually ship.
:root {
--color-base: #3E83EA;
--color-base-rgb: 62 131 234;
--color-base-oklch: oklch(61.8% 0.171 258.5);
--color-50: #F1F6FE;
--color-100: #D9E7FC;
--color-200: #B6D0F7;
--color-300: #84ADEB;
--color-400: #578CDB;
--color-500: #346CC1;
--color-600: #2F5793;
--color-700: #274168;
--color-800: #1D2D44;
--color-900: #141C29;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
signal-blue: {
50: '#F1F6FE',
100: '#D9E7FC',
200: '#B6D0F7',
300: '#84ADEB',
400: '#578CDB',
500: '#346CC1',
600: '#2F5793',
700: '#274168',
800: '#1D2D44',
900: '#141C29',
},
}
$base: #3E83EA; $base-ink: #141310; $base-50: #F1F6FE; $base-100: #D9E7FC; $base-200: #B6D0F7; $base-300: #84ADEB; $base-400: #578CDB; $base-500: #346CC1; $base-600: #2F5793; $base-700: #274168; $base-800: #1D2D44; $base-900: #141C29; $base-hover: #1863D5; $base-subtle: #CBDBF2;
{
"color": {
"base": {
"value": "#3E83EA",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F1F6FE",
"type": "color"
},
"100": {
"value": "#D9E7FC",
"type": "color"
},
"200": {
"value": "#B6D0F7",
"type": "color"
},
"300": {
"value": "#84ADEB",
"type": "color"
},
"400": {
"value": "#578CDB",
"type": "color"
},
"500": {
"value": "#346CC1",
"type": "color"
},
"600": {
"value": "#2F5793",
"type": "color"
},
"700": {
"value": "#274168",
"type": "color"
},
"800": {
"value": "#1D2D44",
"type": "color"
},
"900": {
"value": "#141C29",
"type": "color"
}
}
}
}