#148BC2 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 #148BC2 works with other colors. Named schemes with #148BC2 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 #148BC2 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 #148BC2 at work across the surfaces designers actually ship.
:root {
--color-base: #148BC2;
--color-base-rgb: 20 139 194;
--color-base-oklch: oklch(60.3% 0.126 236.4);
--color-50: #F1FAFE;
--color-100: #D9F1FC;
--color-200: #B5E2F7;
--color-300: #83CBEC;
--color-400: #56B2DC;
--color-500: #3395C2;
--color-600: #2E7393;
--color-700: #275368;
--color-800: #1D3844;
--color-900: #14232A;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
steel-blue: {
50: '#F1FAFE',
100: '#D9F1FC',
200: '#B5E2F7',
300: '#83CBEC',
400: '#56B2DC',
500: '#3395C2',
600: '#2E7393',
700: '#275368',
800: '#1D3844',
900: '#14232A',
},
}
$base: #148BC2; $base-ink: #141310; $base-50: #F1FAFE; $base-100: #D9F1FC; $base-200: #B5E2F7; $base-300: #83CBEC; $base-400: #56B2DC; $base-500: #3395C2; $base-600: #2E7393; $base-700: #275368; $base-800: #1D3844; $base-900: #14232A; $base-hover: #106F9B; $base-subtle: #B7DDEE;
{
"color": {
"base": {
"value": "#148BC2",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F1FAFE",
"type": "color"
},
"100": {
"value": "#D9F1FC",
"type": "color"
},
"200": {
"value": "#B5E2F7",
"type": "color"
},
"300": {
"value": "#83CBEC",
"type": "color"
},
"400": {
"value": "#56B2DC",
"type": "color"
},
"500": {
"value": "#3395C2",
"type": "color"
},
"600": {
"value": "#2E7393",
"type": "color"
},
"700": {
"value": "#275368",
"type": "color"
},
"800": {
"value": "#1D3844",
"type": "color"
},
"900": {
"value": "#14232A",
"type": "color"
}
}
}
}