#407FA5 is a mid-toned, cool blue. On the Color Lab it reads clean and engineered, with a faded, vintage edge. It carries a legible label as a UI accent and reproduces cleanly in print.
Not just a swatch — here's how #407FA5 works with other colors. Named schemes with #407FA5 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 keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal 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 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 #407FA5 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 #407FA5 at work across the surfaces designers actually ship.
:root {
--color-base: #407FA5;
--color-base-rgb: 64 127 165;
--color-base-oklch: oklch(57.1% 0.087 237.5);
--color-50: #F4F8FB;
--color-100: #E1EDF4;
--color-200: #C4DAE8;
--color-300: #9BBED4;
--color-400: #75A1BD;
--color-500: #5483A1;
--color-600: #46677C;
--color-700: #364C59;
--color-800: #26333B;
--color-900: #192025;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
steel-blue: {
50: '#F4F8FB',
100: '#E1EDF4',
200: '#C4DAE8',
300: '#9BBED4',
400: '#75A1BD',
500: '#5483A1',
600: '#46677C',
700: '#364C59',
800: '#26333B',
900: '#192025',
},
}
$base: #407FA5; $base-ink: #141310; $base-50: #F4F8FB; $base-100: #E1EDF4; $base-200: #C4DAE8; $base-300: #9BBED4; $base-400: #75A1BD; $base-500: #5483A1; $base-600: #46677C; $base-700: #364C59; $base-800: #26333B; $base-900: #192025; $base-hover: #336584; $base-subtle: #C7D8E3;
{
"color": {
"base": {
"value": "#407FA5",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F4F8FB",
"type": "color"
},
"100": {
"value": "#E1EDF4",
"type": "color"
},
"200": {
"value": "#C4DAE8",
"type": "color"
},
"300": {
"value": "#9BBED4",
"type": "color"
},
"400": {
"value": "#75A1BD",
"type": "color"
},
"500": {
"value": "#5483A1",
"type": "color"
},
"600": {
"value": "#46677C",
"type": "color"
},
"700": {
"value": "#364C59",
"type": "color"
},
"800": {
"value": "#26333B",
"type": "color"
},
"900": {
"value": "#192025",
"type": "color"
}
}
}
}