#674BDA is a mid-toned, cool purple. On the Color Lab it reads clean and engineered, bold and ownable. It carries a legible label as a UI accent and sits well as a supporting tone.
Not just a swatch — here's how #674BDA works with other colors. Named schemes with #674BDA in its natural role, and a note on why the supporting colors balance it.
Slate 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 Slate Blue.
Slate Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
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 Slate Blue carrying the quiet middle.
Slate Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Slate Blue glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.
How #674BDA 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 #674BDA at work across the surfaces designers actually ship.
:root {
--color-base: #674BDA;
--color-base-rgb: 103 75 218;
--color-base-oklch: oklch(52.7% 0.207 285.8);
--color-50: #F4F2FD;
--color-100: #E2DCF9;
--color-200: #C6BBF1;
--color-300: #9E8DE2;
--color-400: #7862D0;
--color-500: #5840B5;
--color-600: #48388A;
--color-700: #372D62;
--color-800: #272140;
--color-900: #191628;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
slate-blue: {
50: '#F4F2FD',
100: '#E2DCF9',
200: '#C6BBF1',
300: '#9E8DE2',
400: '#7862D0',
500: '#5840B5',
600: '#48388A',
700: '#372D62',
800: '#272140',
900: '#191628',
},
}
$base: #674BDA; $base-ink: #FFFFFF; $base-50: #F4F2FD; $base-100: #E2DCF9; $base-200: #C6BBF1; $base-300: #9E8DE2; $base-400: #7862D0; $base-500: #5840B5; $base-600: #48388A; $base-700: #372D62; $base-800: #272140; $base-900: #191628; $base-hover: #4628C1; $base-subtle: #D4CEEF;
{
"color": {
"base": {
"value": "#674BDA",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F4F2FD",
"type": "color"
},
"100": {
"value": "#E2DCF9",
"type": "color"
},
"200": {
"value": "#C6BBF1",
"type": "color"
},
"300": {
"value": "#9E8DE2",
"type": "color"
},
"400": {
"value": "#7862D0",
"type": "color"
},
"500": {
"value": "#5840B5",
"type": "color"
},
"600": {
"value": "#48388A",
"type": "color"
},
"700": {
"value": "#372D62",
"type": "color"
},
"800": {
"value": "#272140",
"type": "color"
},
"900": {
"value": "#191628",
"type": "color"
}
}
}
}