#2B83CC is a mid-toned, cool indigo. 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 #2B83CC works with other colors. Named schemes with #2B83CC 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 #2B83CC 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 #2B83CC at work across the surfaces designers actually ship.
:root {
--color-base: #2B83CC;
--color-base-rgb: 43 131 204;
--color-base-oklch: oklch(59.4% 0.138 248.1);
--color-50: #F2F8FD;
--color-100: #DDECF9;
--color-200: #BCD9F1;
--color-300: #8EBCE2;
--color-400: #639ECF;
--color-500: #4180B4;
--color-600: #386589;
--color-700: #2D4A62;
--color-800: #213240;
--color-900: #161F27;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
steel-blue: {
50: '#F2F8FD',
100: '#DDECF9',
200: '#BCD9F1',
300: '#8EBCE2',
400: '#639ECF',
500: '#4180B4',
600: '#386589',
700: '#2D4A62',
800: '#213240',
900: '#161F27',
},
}
$base: #2B83CC; $base-ink: #141310; $base-50: #F2F8FD; $base-100: #DDECF9; $base-200: #BCD9F1; $base-300: #8EBCE2; $base-400: #639ECF; $base-500: #4180B4; $base-600: #386589; $base-700: #2D4A62; $base-800: #213240; $base-900: #161F27; $base-hover: #2268A2; $base-subtle: #C4D9EB;
{
"color": {
"base": {
"value": "#2B83CC",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F2F8FD",
"type": "color"
},
"100": {
"value": "#DDECF9",
"type": "color"
},
"200": {
"value": "#BCD9F1",
"type": "color"
},
"300": {
"value": "#8EBCE2",
"type": "color"
},
"400": {
"value": "#639ECF",
"type": "color"
},
"500": {
"value": "#4180B4",
"type": "color"
},
"600": {
"value": "#386589",
"type": "color"
},
"700": {
"value": "#2D4A62",
"type": "color"
},
"800": {
"value": "#213240",
"type": "color"
},
"900": {
"value": "#161F27",
"type": "color"
}
}
}
}