#C4FDFE is a soft, cool cyan-blue. On the Color Lab it reads clean and engineered, restrained and easy to live with. It holds up as a large surface and is too pale to lead as a primary accent.
Not just a swatch — here's how #C4FDFE works with other colors. Named schemes with #C4FDFE in its natural role, and a note on why the supporting colors balance it.
Celeste keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Celeste 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.
Celeste opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Celeste 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 Celeste carrying the quiet middle.
Celeste is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Celeste.
How #C4FDFE 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 #C4FDFE at work across the surfaces designers actually ship.
:root {
--color-base: #C4FDFE;
--color-base-rgb: 196 253 254;
--color-base-oklch: oklch(95.6% 0.057 197.6);
--color-50: #F0FEFE;
--color-100: #D8FDFD;
--color-200: #B1FAFC;
--color-300: #79F4F6;
--color-400: #49E7E9;
--color-500: #25CDD0;
--color-600: #259B9D;
--color-700: #206D6F;
--color-800: #194748;
--color-900: #112B2C;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
celeste: {
50: '#F0FEFE',
100: '#D8FDFD',
200: '#B1FAFC',
300: '#79F4F6',
400: '#49E7E9',
500: '#25CDD0',
600: '#259B9D',
700: '#206D6F',
800: '#194748',
900: '#112B2C',
},
}
$base: #C4FDFE; $base-ink: #141310; $base-50: #F0FEFE; $base-100: #D8FDFD; $base-200: #B1FAFC; $base-300: #79F4F6; $base-400: #49E7E9; $base-500: #25CDD0; $base-600: #259B9D; $base-700: #206D6F; $base-800: #194748; $base-900: #112B2C; $base-hover: #6AFAFD; $base-subtle: #EFFCFD;
{
"color": {
"base": {
"value": "#C4FDFE",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F0FEFE",
"type": "color"
},
"100": {
"value": "#D8FDFD",
"type": "color"
},
"200": {
"value": "#B1FAFC",
"type": "color"
},
"300": {
"value": "#79F4F6",
"type": "color"
},
"400": {
"value": "#49E7E9",
"type": "color"
},
"500": {
"value": "#25CDD0",
"type": "color"
},
"600": {
"value": "#259B9D",
"type": "color"
},
"700": {
"value": "#206D6F",
"type": "color"
},
"800": {
"value": "#194748",
"type": "color"
},
"900": {
"value": "#112B2C",
"type": "color"
}
}
}
}