#685FCC is a mid-toned, cool purple. On the Color Lab it reads clean and engineered. It carries a legible label as a UI accent and sits well as a supporting tone.
Not just a swatch — here's how #685FCC works with other colors. Named schemes with #685FCC in its natural role, and a note on why the supporting colors balance it.
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 plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
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.
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.
How #685FCC 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 #685FCC at work across the surfaces designers actually ship.
:root {
--color-base: #685FCC;
--color-base-rgb: 104 95 204;
--color-base-oklch: oklch(55.0% 0.163 283.4);
--color-50: #F4F3FC;
--color-100: #E1DFF6;
--color-200: #C5C1EB;
--color-300: #9C96D9;
--color-400: #756EC4;
--color-500: #544DA8;
--color-600: #464181;
--color-700: #36325C;
--color-800: #26243D;
--color-900: #191826;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
slate-blue: {
50: '#F4F3FC',
100: '#E1DFF6',
200: '#C5C1EB',
300: '#9C96D9',
400: '#756EC4',
500: '#544DA8',
600: '#464181',
700: '#36325C',
800: '#26243D',
900: '#191826',
},
}
$base: #685FCC; $base-ink: #FFFFFF; $base-50: #F4F3FC; $base-100: #E1DFF6; $base-200: #C5C1EB; $base-300: #9C96D9; $base-400: #756EC4; $base-500: #544DA8; $base-600: #464181; $base-700: #36325C; $base-800: #26243D; $base-900: #191826; $base-hover: #443AB7; $base-subtle: #D5D3EC;
{
"color": {
"base": {
"value": "#685FCC",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F4F3FC",
"type": "color"
},
"100": {
"value": "#E1DFF6",
"type": "color"
},
"200": {
"value": "#C5C1EB",
"type": "color"
},
"300": {
"value": "#9C96D9",
"type": "color"
},
"400": {
"value": "#756EC4",
"type": "color"
},
"500": {
"value": "#544DA8",
"type": "color"
},
"600": {
"value": "#464181",
"type": "color"
},
"700": {
"value": "#36325C",
"type": "color"
},
"800": {
"value": "#26243D",
"type": "color"
},
"900": {
"value": "#191826",
"type": "color"
}
}
}
}