#421F93 is a deep, cool purple. 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 #421F93 works with other colors. Named schemes with #421F93 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 #421F93 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 #421F93 at work across the surfaces designers actually ship.
:root {
--color-base: #421F93;
--color-base-rgb: 66 31 147;
--color-base-oklch: oklch(36.9% 0.174 288.4);
--color-50: #F5F2FD;
--color-100: #E5DDF9;
--color-200: #CCBCF1;
--color-300: #A78EE2;
--color-400: #8363CF;
--color-500: #6441B4;
--color-600: #513889;
--color-700: #3D2D62;
--color-800: #2A2140;
--color-900: #1B1627;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
indigo: {
50: '#F5F2FD',
100: '#E5DDF9',
200: '#CCBCF1',
300: '#A78EE2',
400: '#8363CF',
500: '#6441B4',
600: '#513889',
700: '#3D2D62',
800: '#2A2140',
900: '#1B1627',
},
}
$base: #421F93; $base-ink: #FFFFFF; $base-50: #F5F2FD; $base-100: #E5DDF9; $base-200: #CCBCF1; $base-300: #A78EE2; $base-400: #8363CF; $base-500: #6441B4; $base-600: #513889; $base-700: #3D2D62; $base-800: #2A2140; $base-900: #1B1627; $base-hover: #351976; $base-subtle: #C3B5E6;
{
"color": {
"base": {
"value": "#421F93",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F5F2FD",
"type": "color"
},
"100": {
"value": "#E5DDF9",
"type": "color"
},
"200": {
"value": "#CCBCF1",
"type": "color"
},
"300": {
"value": "#A78EE2",
"type": "color"
},
"400": {
"value": "#8363CF",
"type": "color"
},
"500": {
"value": "#6441B4",
"type": "color"
},
"600": {
"value": "#513889",
"type": "color"
},
"700": {
"value": "#3D2D62",
"type": "color"
},
"800": {
"value": "#2A2140",
"type": "color"
},
"900": {
"value": "#1B1627",
"type": "color"
}
}
}
}