#367FE5 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 #367FE5 works with other colors. Named schemes with #367FE5 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 #367FE5 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 #367FE5 at work across the surfaces designers actually ship.
:root {
--color-base: #367FE5;
--color-base-rgb: 54 127 229;
--color-base-oklch: oklch(60.4% 0.171 257.6);
--color-50: #F1F6FE;
--color-100: #DAE8FB;
--color-200: #B7D1F5;
--color-300: #86AFE9;
--color-400: #598ED9;
--color-500: #376FBE;
--color-600: #315991;
--color-700: #284266;
--color-800: #1E2D43;
--color-900: #141D29;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
signal-blue: {
50: '#F1F6FE',
100: '#DAE8FB',
200: '#B7D1F5',
300: '#86AFE9',
400: '#598ED9',
500: '#376FBE',
600: '#315991',
700: '#284266',
800: '#1E2D43',
900: '#141D29',
},
}
$base: #367FE5; $base-ink: #141310; $base-50: #F1F6FE; $base-100: #DAE8FB; $base-200: #B7D1F5; $base-300: #86AFE9; $base-400: #598ED9; $base-500: #376FBE; $base-600: #315991; $base-700: #284266; $base-800: #1E2D43; $base-900: #141D29; $base-hover: #1A62C7; $base-subtle: #C8D9F1;
{
"color": {
"base": {
"value": "#367FE5",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F1F6FE",
"type": "color"
},
"100": {
"value": "#DAE8FB",
"type": "color"
},
"200": {
"value": "#B7D1F5",
"type": "color"
},
"300": {
"value": "#86AFE9",
"type": "color"
},
"400": {
"value": "#598ED9",
"type": "color"
},
"500": {
"value": "#376FBE",
"type": "color"
},
"600": {
"value": "#315991",
"type": "color"
},
"700": {
"value": "#284266",
"type": "color"
},
"800": {
"value": "#1E2D43",
"type": "color"
},
"900": {
"value": "#141D29",
"type": "color"
}
}
}
}