#310E71 is a deep, cool purple. On the Color Lab it reads clean and engineered, quietly premium. It reproduces cleanly in print.
Not just a swatch — here's how #310E71 works with other colors. Named schemes with #310E71 in its natural role, and a note on why the supporting colors balance it.
Midnight Blue carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.
Midnight Blue adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Midnight Blue.
Midnight Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Midnight 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.
Midnight 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 Midnight Blue carrying the quiet middle.
How #310E71 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 #310E71 at work across the surfaces designers actually ship.
:root {
--color-base: #310E71;
--color-base-rgb: 49 14 113;
--color-base-oklch: oklch(29.7% 0.151 289.6);
--color-50: #F5F1FE;
--color-100: #E6DAFB;
--color-200: #CDB6F6;
--color-300: #A885EA;
--color-400: #8658DA;
--color-500: #6636BF;
--color-600: #523091;
--color-700: #3E2867;
--color-800: #2B1E43;
--color-900: #1B1429;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
midnight-blue: {
50: '#F5F1FE',
100: '#E6DAFB',
200: '#CDB6F6',
300: '#A885EA',
400: '#8658DA',
500: '#6636BF',
600: '#523091',
700: '#3E2867',
800: '#2B1E43',
900: '#1B1429',
},
}
$base: #310E71; $base-ink: #FFFFFF; $base-50: #F5F1FE; $base-100: #E6DAFB; $base-200: #CDB6F6; $base-300: #A885EA; $base-400: #8658DA; $base-500: #6636BF; $base-600: #523091; $base-700: #3E2867; $base-800: #2B1E43; $base-900: #1B1429; $base-hover: #270B5B; $base-subtle: #BBA4E8;
{
"color": {
"base": {
"value": "#310E71",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F5F1FE",
"type": "color"
},
"100": {
"value": "#E6DAFB",
"type": "color"
},
"200": {
"value": "#CDB6F6",
"type": "color"
},
"300": {
"value": "#A885EA",
"type": "color"
},
"400": {
"value": "#8658DA",
"type": "color"
},
"500": {
"value": "#6636BF",
"type": "color"
},
"600": {
"value": "#523091",
"type": "color"
},
"700": {
"value": "#3E2867",
"type": "color"
},
"800": {
"value": "#2B1E43",
"type": "color"
},
"900": {
"value": "#1B1429",
"type": "color"
}
}
}
}