#457FAC 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 reproduces cleanly in print.
Not just a swatch — here's how #457FAC works with other colors. Named schemes with #457FAC 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 #457FAC 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 #457FAC at work across the surfaces designers actually ship.
:root {
--color-base: #457FAC;
--color-base-rgb: 69 127 172;
--color-base-oklch: oklch(57.7% 0.093 243.8);
--color-50: #F4F8FB;
--color-100: #E1ECF4;
--color-200: #C5D9E8;
--color-300: #9CBBD3;
--color-400: #759EBD;
--color-500: #557FA0;
--color-600: #46647C;
--color-700: #364A59;
--color-800: #26323B;
--color-900: #191F24;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
steel-blue: {
50: '#F4F8FB',
100: '#E1ECF4',
200: '#C5D9E8',
300: '#9CBBD3',
400: '#759EBD',
500: '#557FA0',
600: '#46647C',
700: '#364A59',
800: '#26323B',
900: '#191F24',
},
}
$base: #457FAC; $base-ink: #141310; $base-50: #F4F8FB; $base-100: #E1ECF4; $base-200: #C5D9E8; $base-300: #9CBBD3; $base-400: #759EBD; $base-500: #557FA0; $base-600: #46647C; $base-700: #364A59; $base-800: #26323B; $base-900: #191F24; $base-hover: #376589; $base-subtle: #C9D8E4;
{
"color": {
"base": {
"value": "#457FAC",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F4F8FB",
"type": "color"
},
"100": {
"value": "#E1ECF4",
"type": "color"
},
"200": {
"value": "#C5D9E8",
"type": "color"
},
"300": {
"value": "#9CBBD3",
"type": "color"
},
"400": {
"value": "#759EBD",
"type": "color"
},
"500": {
"value": "#557FA0",
"type": "color"
},
"600": {
"value": "#46647C",
"type": "color"
},
"700": {
"value": "#364A59",
"type": "color"
},
"800": {
"value": "#26323B",
"type": "color"
},
"900": {
"value": "#191F24",
"type": "color"
}
}
}
}