#4576BF 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 #4576BF works with other colors. Named schemes with #4576BF 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 #4576BF 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 #4576BF at work across the surfaces designers actually ship.
:root {
--color-base: #4576BF;
--color-base-rgb: 69 118 191;
--color-base-oklch: oklch(56.6% 0.125 258.2);
--color-50: #F3F7FB;
--color-100: #E0E8F5;
--color-200: #C2D2EA;
--color-300: #98B1D7;
--color-400: #7091C2;
--color-500: #4F72A6;
--color-600: #425B7F;
--color-700: #34435B;
--color-800: #252E3C;
--color-900: #181D25;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
steel-blue: {
50: '#F3F7FB',
100: '#E0E8F5',
200: '#C2D2EA',
300: '#98B1D7',
400: '#7091C2',
500: '#4F72A6',
600: '#425B7F',
700: '#34435B',
800: '#252E3C',
900: '#181D25',
},
}
$base: #4576BF; $base-ink: #141310; $base-50: #F3F7FB; $base-100: #E0E8F5; $base-200: #C2D2EA; $base-300: #98B1D7; $base-400: #7091C2; $base-500: #4F72A6; $base-600: #425B7F; $base-700: #34435B; $base-800: #252E3C; $base-900: #181D25; $base-hover: #355E9B; $base-subtle: #CCD7E7;
{
"color": {
"base": {
"value": "#4576BF",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3F7FB",
"type": "color"
},
"100": {
"value": "#E0E8F5",
"type": "color"
},
"200": {
"value": "#C2D2EA",
"type": "color"
},
"300": {
"value": "#98B1D7",
"type": "color"
},
"400": {
"value": "#7091C2",
"type": "color"
},
"500": {
"value": "#4F72A6",
"type": "color"
},
"600": {
"value": "#425B7F",
"type": "color"
},
"700": {
"value": "#34435B",
"type": "color"
},
"800": {
"value": "#252E3C",
"type": "color"
},
"900": {
"value": "#181D25",
"type": "color"
}
}
}
}