#4FCBEB is a mid-toned, cool blue. On the Color Lab it reads clean and engineered. It sits well as a supporting tone.
Not just a swatch — here's how #4FCBEB works with other colors. Named schemes with #4FCBEB in its natural role, and a note on why the supporting colors balance it.
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 keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
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.
Lagoon 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 #4FCBEB 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 #4FCBEB at work across the surfaces designers actually ship.
:root {
--color-base: #4FCBEB;
--color-base-rgb: 79 203 235;
--color-base-oklch: oklch(78.6% 0.117 218.2);
--color-50: #F1FBFE;
--color-100: #D9F5FC;
--color-200: #B6EAF7;
--color-300: #84D7EB;
--color-400: #57C1DB;
--color-500: #34A5C1;
--color-600: #2F7F93;
--color-700: #275B68;
--color-800: #1D3C44;
--color-900: #142529;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
lagoon-blue: {
50: '#F1FBFE',
100: '#D9F5FC',
200: '#B6EAF7',
300: '#84D7EB',
400: '#57C1DB',
500: '#34A5C1',
600: '#2F7F93',
700: '#275B68',
800: '#1D3C44',
900: '#142529',
},
}
$base: #4FCBEB; $base-ink: #141310; $base-50: #F1FBFE; $base-100: #D9F5FC; $base-200: #B6EAF7; $base-300: #84D7EB; $base-400: #57C1DB; $base-500: #34A5C1; $base-600: #2F7F93; $base-700: #275B68; $base-800: #1D3C44; $base-900: #142529; $base-hover: #19BBE4; $base-subtle: #D0EDF4;
{
"color": {
"base": {
"value": "#4FCBEB",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F1FBFE",
"type": "color"
},
"100": {
"value": "#D9F5FC",
"type": "color"
},
"200": {
"value": "#B6EAF7",
"type": "color"
},
"300": {
"value": "#84D7EB",
"type": "color"
},
"400": {
"value": "#57C1DB",
"type": "color"
},
"500": {
"value": "#34A5C1",
"type": "color"
},
"600": {
"value": "#2F7F93",
"type": "color"
},
"700": {
"value": "#275B68",
"type": "color"
},
"800": {
"value": "#1D3C44",
"type": "color"
},
"900": {
"value": "#142529",
"type": "color"
}
}
}
}