#0A89BC 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 #0A89BC works with other colors. Named schemes with #0A89BC 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 #0A89BC 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 #0A89BC at work across the surfaces designers actually ship.
:root {
--color-base: #0A89BC;
--color-base-rgb: 10 137 188;
--color-base-oklch: oklch(59.4% 0.123 234.2);
--color-50: #F0FAFE;
--color-100: #D8F3FD;
--color-200: #B2E6FB;
--color-300: #7ED1F2;
--color-400: #4FB9E3;
--color-500: #2B9DCA;
--color-600: #297999;
--color-700: #23576C;
--color-800: #1B3A46;
--color-900: #12242B;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
steel-blue: {
50: '#F0FAFE',
100: '#D8F3FD',
200: '#B2E6FB',
300: '#7ED1F2',
400: '#4FB9E3',
500: '#2B9DCA',
600: '#297999',
700: '#23576C',
800: '#1B3A46',
900: '#12242B',
},
}
$base: #0A89BC; $base-ink: #141310; $base-50: #F0FAFE; $base-100: #D8F3FD; $base-200: #B2E6FB; $base-300: #7ED1F2; $base-400: #4FB9E3; $base-500: #2B9DCA; $base-600: #297999; $base-700: #23576C; $base-800: #1B3A46; $base-900: #12242B; $base-hover: #086F97; $base-subtle: #B0DEF0;
{
"color": {
"base": {
"value": "#0A89BC",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F0FAFE",
"type": "color"
},
"100": {
"value": "#D8F3FD",
"type": "color"
},
"200": {
"value": "#B2E6FB",
"type": "color"
},
"300": {
"value": "#7ED1F2",
"type": "color"
},
"400": {
"value": "#4FB9E3",
"type": "color"
},
"500": {
"value": "#2B9DCA",
"type": "color"
},
"600": {
"value": "#297999",
"type": "color"
},
"700": {
"value": "#23576C",
"type": "color"
},
"800": {
"value": "#1B3A46",
"type": "color"
},
"900": {
"value": "#12242B",
"type": "color"
}
}
}
}