#291DCD is a deep, cool violet. On the Color Lab it reads clean and engineered, bold and ownable. It sits well as a supporting tone.
Not just a swatch — here's how #291DCD works with other colors. Named schemes with #291DCD in its natural role, and a note on why the supporting colors balance it.
Medium Blue is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Medium Blue.
Medium Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Medium Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
Medium 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 Medium Blue carrying the quiet middle.
Medium Blue glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.
How #291DCD 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 #291DCD at work across the surfaces designers actually ship.
:root {
--color-base: #291DCD;
--color-base-rgb: 41 29 205;
--color-base-oklch: oklch(41.3% 0.246 270.8);
--color-50: #F2F1FE;
--color-100: #DDDAFB;
--color-200: #BCB8F5;
--color-300: #8E87E8;
--color-400: #635BD7;
--color-500: #4138BC;
--color-600: #383290;
--color-700: #2D2966;
--color-800: #211E42;
--color-900: #161429;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
medium-blue: {
50: '#F2F1FE',
100: '#DDDAFB',
200: '#BCB8F5',
300: '#8E87E8',
400: '#635BD7',
500: '#4138BC',
600: '#383290',
700: '#2D2966',
800: '#211E42',
900: '#161429',
},
}
$base: #291DCD; $base-ink: #FFFFFF; $base-50: #F2F1FE; $base-100: #DDDAFB; $base-200: #BCB8F5; $base-300: #8E87E8; $base-400: #635BD7; $base-500: #4138BC; $base-600: #383290; $base-700: #2D2966; $base-800: #211E42; $base-900: #161429; $base-hover: #2117A4; $base-subtle: #C1BEED;
{
"color": {
"base": {
"value": "#291DCD",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F2F1FE",
"type": "color"
},
"100": {
"value": "#DDDAFB",
"type": "color"
},
"200": {
"value": "#BCB8F5",
"type": "color"
},
"300": {
"value": "#8E87E8",
"type": "color"
},
"400": {
"value": "#635BD7",
"type": "color"
},
"500": {
"value": "#4138BC",
"type": "color"
},
"600": {
"value": "#383290",
"type": "color"
},
"700": {
"value": "#2D2966",
"type": "color"
},
"800": {
"value": "#211E42",
"type": "color"
},
"900": {
"value": "#161429",
"type": "color"
}
}
}
}