#296399 is a mid-toned, cool indigo. On the Color Lab it reads clean and engineered, quietly premium. It carries a legible label as a UI accent and sits well as a supporting tone.
Not just a swatch — here's how #296399 works with other colors. Named schemes with #296399 in its natural role, and a note on why the supporting colors balance it.
Lapis Lazuli opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Lapis Lazuli is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Lapis Lazuli.
Lapis Lazuli plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Lapis Lazuli sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
Lapis Lazuli 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 Lapis Lazuli carrying the quiet middle.
How #296399 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 #296399 at work across the surfaces designers actually ship.
:root {
--color-base: #296399;
--color-base-rgb: 41 99 153;
--color-base-oklch: oklch(48.8% 0.106 249.5);
--color-50: #F2F8FC;
--color-100: #DEEBF7;
--color-200: #BFD7EE;
--color-300: #92B9DD;
--color-400: #699BC9;
--color-500: #477CAD;
--color-600: #3D6285;
--color-700: #30485F;
--color-800: #23313E;
--color-900: #171F26;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
lapis-lazuli: {
50: '#F2F8FC',
100: '#DEEBF7',
200: '#BFD7EE',
300: '#92B9DD',
400: '#699BC9',
500: '#477CAD',
600: '#3D6285',
700: '#30485F',
800: '#23313E',
900: '#171F26',
},
}
$base: #296399; $base-ink: #FFFFFF; $base-50: #F2F8FC; $base-100: #DEEBF7; $base-200: #BFD7EE; $base-300: #92B9DD; $base-400: #699BC9; $base-500: #477CAD; $base-600: #3D6285; $base-700: #30485F; $base-800: #23313E; $base-900: #171F26; $base-hover: #214F7A; $base-subtle: #BBD0E4;
{
"color": {
"base": {
"value": "#296399",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F2F8FC",
"type": "color"
},
"100": {
"value": "#DEEBF7",
"type": "color"
},
"200": {
"value": "#BFD7EE",
"type": "color"
},
"300": {
"value": "#92B9DD",
"type": "color"
},
"400": {
"value": "#699BC9",
"type": "color"
},
"500": {
"value": "#477CAD",
"type": "color"
},
"600": {
"value": "#3D6285",
"type": "color"
},
"700": {
"value": "#30485F",
"type": "color"
},
"800": {
"value": "#23313E",
"type": "color"
},
"900": {
"value": "#171F26",
"type": "color"
}
}
}
}