#0289CD 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 #0289CD works with other colors. Named schemes with #0289CD 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 #0289CD 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 #0289CD at work across the surfaces designers actually ship.
:root {
--color-base: #0289CD;
--color-base-rgb: 2 137 205;
--color-base-oklch: oklch(60.3% 0.141 241.5);
--color-50: #F0FAFE;
--color-100: #D8F1FD;
--color-200: #B1E3FC;
--color-300: #78CDF7;
--color-400: #48B4EA;
--color-500: #2497D1;
--color-600: #24759E;
--color-700: #20556F;
--color-800: #193848;
--color-900: #11232C;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
steel-blue: {
50: '#F0FAFE',
100: '#D8F1FD',
200: '#B1E3FC',
300: '#78CDF7',
400: '#48B4EA',
500: '#2497D1',
600: '#24759E',
700: '#20556F',
800: '#193848',
900: '#11232C',
},
}
$base: #0289CD; $base-ink: #141310; $base-50: #F0FAFE; $base-100: #D8F1FD; $base-200: #B1E3FC; $base-300: #78CDF7; $base-400: #48B4EA; $base-500: #2497D1; $base-600: #24759E; $base-700: #20556F; $base-800: #193848; $base-900: #11232C; $base-hover: #026FA6; $base-subtle: #B0DDF3;
{
"color": {
"base": {
"value": "#0289CD",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F0FAFE",
"type": "color"
},
"100": {
"value": "#D8F1FD",
"type": "color"
},
"200": {
"value": "#B1E3FC",
"type": "color"
},
"300": {
"value": "#78CDF7",
"type": "color"
},
"400": {
"value": "#48B4EA",
"type": "color"
},
"500": {
"value": "#2497D1",
"type": "color"
},
"600": {
"value": "#24759E",
"type": "color"
},
"700": {
"value": "#20556F",
"type": "color"
},
"800": {
"value": "#193848",
"type": "color"
},
"900": {
"value": "#11232C",
"type": "color"
}
}
}
}