#370798 is a deep, cool purple. On the Color Lab it reads clean and engineered, quietly premium. It sits well as a supporting tone.
Not just a swatch — here's how #370798 works with other colors. Named schemes with #370798 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 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.
Indigo opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Indigo glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.
How #370798 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 #370798 at work across the surfaces designers actually ship.
:root {
--color-base: #370798;
--color-base-rgb: 55 7 152;
--color-base-oklch: oklch(34.4% 0.197 283.7);
--color-50: #F5F0FE;
--color-100: #E4D8FD;
--color-200: #CAB1FB;
--color-300: #A47DF2;
--color-400: #804EE4;
--color-500: #602ACB;
--color-600: #4E289A;
--color-700: #3B236C;
--color-800: #291B46;
--color-900: #1A122B;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
indigo: {
50: '#F5F0FE',
100: '#E4D8FD',
200: '#CAB1FB',
300: '#A47DF2',
400: '#804EE4',
500: '#602ACB',
600: '#4E289A',
700: '#3B236C',
800: '#291B46',
900: '#1A122B',
},
}
$base: #370798; $base-ink: #FFFFFF; $base-50: #F5F0FE; $base-100: #E4D8FD; $base-200: #CAB1FB; $base-300: #A47DF2; $base-400: #804EE4; $base-500: #602ACB; $base-600: #4E289A; $base-700: #3B236C; $base-800: #291B46; $base-900: #1A122B; $base-hover: #2C0679; $base-subtle: #BEA6EF;
{
"color": {
"base": {
"value": "#370798",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F5F0FE",
"type": "color"
},
"100": {
"value": "#E4D8FD",
"type": "color"
},
"200": {
"value": "#CAB1FB",
"type": "color"
},
"300": {
"value": "#A47DF2",
"type": "color"
},
"400": {
"value": "#804EE4",
"type": "color"
},
"500": {
"value": "#602ACB",
"type": "color"
},
"600": {
"value": "#4E289A",
"type": "color"
},
"700": {
"value": "#3B236C",
"type": "color"
},
"800": {
"value": "#291B46",
"type": "color"
},
"900": {
"value": "#1A122B",
"type": "color"
}
}
}
}