#677FDC is a mid-toned, cool violet. 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 #677FDC works with other colors. Named schemes with #677FDC in its natural role, and a note on why the supporting colors balance it.
Cornflower Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Cornflower Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Cornflower 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 Cornflower Blue.
Cornflower 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 Cornflower Blue carrying the quiet middle.
Cornflower 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.
How #677FDC 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 #677FDC at work across the surfaces designers actually ship.
:root {
--color-base: #677FDC;
--color-base-rgb: 103 127 220;
--color-base-oklch: oklch(62.1% 0.143 270.9);
--color-50: #F2F4FD;
--color-100: #DDE2F8;
--color-200: #BDC7F0;
--color-300: #8F9FE0;
--color-400: #657ACD;
--color-500: #4359B2;
--color-600: #3A4988;
--color-700: #2E3861;
--color-800: #212740;
--color-900: #161927;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
cornflower-blue: {
50: '#F2F4FD',
100: '#DDE2F8',
200: '#BDC7F0',
300: '#8F9FE0',
400: '#657ACD',
500: '#4359B2',
600: '#3A4988',
700: '#2E3861',
800: '#212740',
900: '#161927',
},
}
$base: #677FDC; $base-ink: #141310; $base-50: #F2F4FD; $base-100: #DDE2F8; $base-200: #BDC7F0; $base-300: #8F9FE0; $base-400: #657ACD; $base-500: #4359B2; $base-600: #3A4988; $base-700: #2E3861; $base-800: #212740; $base-900: #161927; $base-hover: #3151D0; $base-subtle: #D5DBF0;
{
"color": {
"base": {
"value": "#677FDC",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F2F4FD",
"type": "color"
},
"100": {
"value": "#DDE2F8",
"type": "color"
},
"200": {
"value": "#BDC7F0",
"type": "color"
},
"300": {
"value": "#8F9FE0",
"type": "color"
},
"400": {
"value": "#657ACD",
"type": "color"
},
"500": {
"value": "#4359B2",
"type": "color"
},
"600": {
"value": "#3A4988",
"type": "color"
},
"700": {
"value": "#2E3861",
"type": "color"
},
"800": {
"value": "#212740",
"type": "color"
},
"900": {
"value": "#161927",
"type": "color"
}
}
}
}