#4087CE 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 #4087CE works with other colors. Named schemes with #4087CE 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 #4087CE 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 #4087CE at work across the surfaces designers actually ship.
:root {
--color-base: #4087CE;
--color-base-rgb: 64 135 206;
--color-base-oklch: oklch(61.1% 0.130 250.8);
--color-50: #F2F7FC;
--color-100: #DEEBF7;
--color-200: #BED6EE;
--color-300: #92B8DE;
--color-400: #6899CA;
--color-500: #467AAE;
--color-600: #3C6186;
--color-700: #30475F;
--color-800: #22303F;
--color-900: #171F27;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
steel-blue: {
50: '#F2F7FC',
100: '#DEEBF7',
200: '#BED6EE',
300: '#92B8DE',
400: '#6899CA',
500: '#467AAE',
600: '#3C6186',
700: '#30475F',
800: '#22303F',
900: '#171F27',
},
}
$base: #4087CE; $base-ink: #141310; $base-50: #F2F7FC; $base-100: #DEEBF7; $base-200: #BED6EE; $base-300: #92B8DE; $base-400: #6899CA; $base-500: #467AAE; $base-600: #3C6186; $base-700: #30475F; $base-800: #22303F; $base-900: #171F27; $base-hover: #2C6CAC; $base-subtle: #CBDBEB;
{
"color": {
"base": {
"value": "#4087CE",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F2F7FC",
"type": "color"
},
"100": {
"value": "#DEEBF7",
"type": "color"
},
"200": {
"value": "#BED6EE",
"type": "color"
},
"300": {
"value": "#92B8DE",
"type": "color"
},
"400": {
"value": "#6899CA",
"type": "color"
},
"500": {
"value": "#467AAE",
"type": "color"
},
"600": {
"value": "#3C6186",
"type": "color"
},
"700": {
"value": "#30475F",
"type": "color"
},
"800": {
"value": "#22303F",
"type": "color"
},
"900": {
"value": "#171F27",
"type": "color"
}
}
}
}