#55397F is a mid-toned, cool purple. On the Color Lab it reads clean and engineered, quietly premium. It carries a legible label as a UI accent and reproduces cleanly in print.
Not just a swatch — here's how #55397F works with other colors. Named schemes with #55397F in its natural role, and a note on why the supporting colors balance it.
Dark Slate Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
Dark Slate Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Dark Slate 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.
Dark Slate Blue anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.
Dark Slate 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 Dark Slate Blue carrying the quiet middle.
How #55397F 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 #55397F at work across the surfaces designers actually ship.
:root {
--color-base: #55397F;
--color-base-rgb: 85 57 127;
--color-base-oklch: oklch(41.2% 0.115 299.8);
--color-50: #F7F4FB;
--color-100: #E9E2F3;
--color-200: #D3C7E6;
--color-300: #B39FD0;
--color-400: #937AB8;
--color-500: #74599C;
--color-600: #5C4979;
--color-700: #443857;
--color-800: #2F273A;
--color-900: #1E1924;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
dark-slate-blue: {
50: '#F7F4FB',
100: '#E9E2F3',
200: '#D3C7E6',
300: '#B39FD0',
400: '#937AB8',
500: '#74599C',
600: '#5C4979',
700: '#443857',
800: '#2F273A',
900: '#1E1924',
},
}
$base: #55397F; $base-ink: #FFFFFF; $base-50: #F7F4FB; $base-100: #E9E2F3; $base-200: #D3C7E6; $base-300: #B39FD0; $base-400: #937AB8; $base-500: #74599C; $base-600: #5C4979; $base-700: #443857; $base-800: #2F273A; $base-900: #1E1924; $base-hover: #442E65; $base-subtle: #CBC0DC;
{
"color": {
"base": {
"value": "#55397F",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F7F4FB",
"type": "color"
},
"100": {
"value": "#E9E2F3",
"type": "color"
},
"200": {
"value": "#D3C7E6",
"type": "color"
},
"300": {
"value": "#B39FD0",
"type": "color"
},
"400": {
"value": "#937AB8",
"type": "color"
},
"500": {
"value": "#74599C",
"type": "color"
},
"600": {
"value": "#5C4979",
"type": "color"
},
"700": {
"value": "#443857",
"type": "color"
},
"800": {
"value": "#2F273A",
"type": "color"
},
"900": {
"value": "#1E1924",
"type": "color"
}
}
}
}