#3674A4 is a mid-toned, cool blue. 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 #3674A4 works with other colors. Named schemes with #3674A4 in its natural role, and a note on why the supporting colors balance it.
Teal Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Teal 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 Teal Blue.
Teal 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.
Teal Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
Teal 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 Teal Blue carrying the quiet middle.
How #3674A4 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 #3674A4 at work across the surfaces designers actually ship.
:root {
--color-base: #3674A4;
--color-base-rgb: 54 116 164;
--color-base-oklch: oklch(54.0% 0.099 244.6);
--color-50: #F3F8FC;
--color-100: #E0ECF5;
--color-200: #C2D9EB;
--color-300: #97BCD8;
--color-400: #709FC2;
--color-500: #4E80A6;
--color-600: #426580;
--color-700: #334A5C;
--color-800: #24323C;
--color-900: #182025;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
teal-blue: {
50: '#F3F8FC',
100: '#E0ECF5',
200: '#C2D9EB',
300: '#97BCD8',
400: '#709FC2',
500: '#4E80A6',
600: '#426580',
700: '#334A5C',
800: '#24323C',
900: '#182025',
},
}
$base: #3674A4; $base-ink: #FFFFFF; $base-50: #F3F8FC; $base-100: #E0ECF5; $base-200: #C2D9EB; $base-300: #97BCD8; $base-400: #709FC2; $base-500: #4E80A6; $base-600: #426580; $base-700: #334A5C; $base-800: #24323C; $base-900: #182025; $base-hover: #2C5E84; $base-subtle: #C3D6E4;
{
"color": {
"base": {
"value": "#3674A4",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F3F8FC",
"type": "color"
},
"100": {
"value": "#E0ECF5",
"type": "color"
},
"200": {
"value": "#C2D9EB",
"type": "color"
},
"300": {
"value": "#97BCD8",
"type": "color"
},
"400": {
"value": "#709FC2",
"type": "color"
},
"500": {
"value": "#4E80A6",
"type": "color"
},
"600": {
"value": "#426580",
"type": "color"
},
"700": {
"value": "#334A5C",
"type": "color"
},
"800": {
"value": "#24323C",
"type": "color"
},
"900": {
"value": "#182025",
"type": "color"
}
}
}
}