#64C5CE is a soft, cool cyan-blue. On the Color Lab it reads clean and engineered. It sits well as a supporting tone.
Not just a swatch — here's how #64C5CE works with other colors. Named schemes with #64C5CE in its natural role, and a note on why the supporting colors balance it.
Lagoon Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Lagoon Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Lagoon Blue sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.
Lagoon 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 Lagoon Blue.
Lagoon 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 Lagoon Blue carrying the quiet middle.
How #64C5CE 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 #64C5CE at work across the surfaces designers actually ship.
:root {
--color-base: #64C5CE;
--color-base-rgb: 100 197 206;
--color-base-oklch: oklch(76.8% 0.092 203.4);
--color-50: #F3FBFC;
--color-100: #DFF4F6;
--color-200: #C1E8EB;
--color-300: #96D4D9;
--color-400: #6EBDC4;
--color-500: #4DA1A8;
--color-600: #417C81;
--color-700: #32595C;
--color-800: #243B3D;
--color-900: #182426;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
lagoon-blue: {
50: '#F3FBFC',
100: '#DFF4F6',
200: '#C1E8EB',
300: '#96D4D9',
400: '#6EBDC4',
500: '#4DA1A8',
600: '#417C81',
700: '#32595C',
800: '#243B3D',
900: '#182426',
},
}
$base: #64C5CE; $base-ink: #141310; $base-50: #F3FBFC; $base-100: #DFF4F6; $base-200: #C1E8EB; $base-300: #96D4D9; $base-400: #6EBDC4; $base-500: #4DA1A8; $base-600: #417C81; $base-700: #32595C; $base-800: #243B3D; $base-900: #182426; $base-hover: #3BAFBA; $base-subtle: #D4EAEC;
{
"color": {
"base": {
"value": "#64C5CE",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3FBFC",
"type": "color"
},
"100": {
"value": "#DFF4F6",
"type": "color"
},
"200": {
"value": "#C1E8EB",
"type": "color"
},
"300": {
"value": "#96D4D9",
"type": "color"
},
"400": {
"value": "#6EBDC4",
"type": "color"
},
"500": {
"value": "#4DA1A8",
"type": "color"
},
"600": {
"value": "#417C81",
"type": "color"
},
"700": {
"value": "#32595C",
"type": "color"
},
"800": {
"value": "#243B3D",
"type": "color"
},
"900": {
"value": "#182426",
"type": "color"
}
}
}
}