#147CA5 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 #147CA5 works with other colors. Named schemes with #147CA5 in its natural role, and a note on why the supporting colors balance it.
Steel Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Steel 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 Steel Blue.
Steel 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.
Steel Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
Steel 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 Steel Blue carrying the quiet middle.
How #147CA5 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 #147CA5 at work across the surfaces designers actually ship.
:root {
--color-base: #147CA5;
--color-base-rgb: 20 124 165;
--color-base-oklch: oklch(55.1% 0.107 231.6);
--color-50: #F1FAFE;
--color-100: #DAF2FB;
--color-200: #B6E4F6;
--color-300: #85CDEA;
--color-400: #58B5DA;
--color-500: #3698BF;
--color-600: #307691;
--color-700: #285567;
--color-800: #1E3943;
--color-900: #142329;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
steel-blue: {
50: '#F1FAFE',
100: '#DAF2FB',
200: '#B6E4F6',
300: '#85CDEA',
400: '#58B5DA',
500: '#3698BF',
600: '#307691',
700: '#285567',
800: '#1E3943',
900: '#142329',
},
}
$base: #147CA5; $base-ink: #FFFFFF; $base-50: #F1FAFE; $base-100: #DAF2FB; $base-200: #B6E4F6; $base-300: #85CDEA; $base-400: #58B5DA; $base-500: #3698BF; $base-600: #307691; $base-700: #285567; $base-800: #1E3943; $base-900: #142329; $base-hover: #106283; $base-subtle: #B1DBEB;
{
"color": {
"base": {
"value": "#147CA5",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F1FAFE",
"type": "color"
},
"100": {
"value": "#DAF2FB",
"type": "color"
},
"200": {
"value": "#B6E4F6",
"type": "color"
},
"300": {
"value": "#85CDEA",
"type": "color"
},
"400": {
"value": "#58B5DA",
"type": "color"
},
"500": {
"value": "#3698BF",
"type": "color"
},
"600": {
"value": "#307691",
"type": "color"
},
"700": {
"value": "#285567",
"type": "color"
},
"800": {
"value": "#1E3943",
"type": "color"
},
"900": {
"value": "#142329",
"type": "color"
}
}
}
}