#37147D 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 #37147D works with other colors. Named schemes with #37147D in its natural role, and a note on why the supporting colors balance it.
Indigo 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.
Indigo 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 Indigo.
Indigo opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Indigo plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Indigo 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 Indigo carrying the quiet middle.
How #37147D 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 #37147D at work across the surfaces designers actually ship.
:root {
--color-base: #37147D;
--color-base-rgb: 55 20 125;
--color-base-oklch: oklch(32.3% 0.159 289.2);
--color-50: #F5F1FD;
--color-100: #E5DBFA;
--color-200: #CCB9F3;
--color-300: #A889E6;
--color-400: #855DD5;
--color-500: #653BBA;
--color-600: #52348E;
--color-700: #3E2A64;
--color-800: #2B1F42;
--color-900: #1B1528;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
indigo: {
50: '#F5F1FD',
100: '#E5DBFA',
200: '#CCB9F3',
300: '#A889E6',
400: '#855DD5',
500: '#653BBA',
600: '#52348E',
700: '#3E2A64',
800: '#2B1F42',
900: '#1B1528',
},
}
$base: #37147D; $base-ink: #FFFFFF; $base-50: #F5F1FD; $base-100: #E5DBFA; $base-200: #CCB9F3; $base-300: #A889E6; $base-400: #855DD5; $base-500: #653BBA; $base-600: #52348E; $base-700: #3E2A64; $base-800: #2B1F42; $base-900: #1B1528; $base-hover: #2B1062; $base-subtle: #BEAAE6;
{
"color": {
"base": {
"value": "#37147D",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F5F1FD",
"type": "color"
},
"100": {
"value": "#E5DBFA",
"type": "color"
},
"200": {
"value": "#CCB9F3",
"type": "color"
},
"300": {
"value": "#A889E6",
"type": "color"
},
"400": {
"value": "#855DD5",
"type": "color"
},
"500": {
"value": "#653BBA",
"type": "color"
},
"600": {
"value": "#52348E",
"type": "color"
},
"700": {
"value": "#3E2A64",
"type": "color"
},
"800": {
"value": "#2B1F42",
"type": "color"
},
"900": {
"value": "#1B1528",
"type": "color"
}
}
}
}