#4478C5 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 #4478C5 works with other colors. Named schemes with #4478C5 in its natural role, and a note on why the supporting colors balance it.
True Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
True 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 True Blue.
True 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.
True Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
True 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 True Blue carrying the quiet middle.
How #4478C5 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 #4478C5 at work across the surfaces designers actually ship.
:root {
--color-base: #4478C5;
--color-base-rgb: 68 120 197;
--color-base-oklch: oklch(57.4% 0.132 258.1);
--color-50: #F3F6FC;
--color-100: #DFE8F6;
--color-200: #C1D2EC;
--color-300: #95B1DA;
--color-400: #6D90C5;
--color-500: #4C71A9;
--color-600: #405A82;
--color-700: #32435D;
--color-800: #242E3D;
--color-900: #171D26;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
true-blue: {
50: '#F3F6FC',
100: '#DFE8F6',
200: '#C1D2EC',
300: '#95B1DA',
400: '#6D90C5',
500: '#4C71A9',
600: '#405A82',
700: '#32435D',
800: '#242E3D',
900: '#171D26',
},
}
$base: #4478C5; $base-ink: #141310; $base-50: #F3F6FC; $base-100: #DFE8F6; $base-200: #C1D2EC; $base-300: #95B1DA; $base-400: #6D90C5; $base-500: #4C71A9; $base-600: #405A82; $base-700: #32435D; $base-800: #242E3D; $base-900: #171D26; $base-hover: #325FA2; $base-subtle: #CBD7E9;
{
"color": {
"base": {
"value": "#4478C5",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3F6FC",
"type": "color"
},
"100": {
"value": "#DFE8F6",
"type": "color"
},
"200": {
"value": "#C1D2EC",
"type": "color"
},
"300": {
"value": "#95B1DA",
"type": "color"
},
"400": {
"value": "#6D90C5",
"type": "color"
},
"500": {
"value": "#4C71A9",
"type": "color"
},
"600": {
"value": "#405A82",
"type": "color"
},
"700": {
"value": "#32435D",
"type": "color"
},
"800": {
"value": "#242E3D",
"type": "color"
},
"900": {
"value": "#171D26",
"type": "color"
}
}
}
}