#09C0CD is a mid-toned, 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 #09C0CD works with other colors. Named schemes with #09C0CD in its natural role, and a note on why the supporting colors balance it.
Robin Egg Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Robin Egg Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Robin Egg 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 Robin Egg Blue.
Robin Egg 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 Robin Egg Blue carrying the quiet middle.
Robin Egg 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 #09C0CD 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 #09C0CD at work across the surfaces designers actually ship.
:root {
--color-base: #09C0CD;
--color-base-rgb: 9 192 205;
--color-base-oklch: oklch(73.7% 0.125 203.5);
--color-50: #F0FDFE;
--color-100: #D8FBFD;
--color-200: #B1F7FC;
--color-300: #7CEBF3;
--color-400: #4DDBE5;
--color-500: #29C1CB;
--color-600: #28939A;
--color-700: #22686D;
--color-800: #1A4447;
--color-900: #12292B;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
robin-egg-blue: {
50: '#F0FDFE',
100: '#D8FBFD',
200: '#B1F7FC',
300: '#7CEBF3',
400: '#4DDBE5',
500: '#29C1CB',
600: '#28939A',
700: '#22686D',
800: '#1A4447',
900: '#12292B',
},
}
$base: #09C0CD; $base-ink: #141310; $base-50: #F0FDFE; $base-100: #D8FBFD; $base-200: #B1F7FC; $base-300: #7CEBF3; $base-400: #4DDBE5; $base-500: #29C1CB; $base-600: #28939A; $base-700: #22686D; $base-800: #1A4447; $base-900: #12292B; $base-hover: #079AA5; $base-subtle: #B4EEF2;
{
"color": {
"base": {
"value": "#09C0CD",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F0FDFE",
"type": "color"
},
"100": {
"value": "#D8FBFD",
"type": "color"
},
"200": {
"value": "#B1F7FC",
"type": "color"
},
"300": {
"value": "#7CEBF3",
"type": "color"
},
"400": {
"value": "#4DDBE5",
"type": "color"
},
"500": {
"value": "#29C1CB",
"type": "color"
},
"600": {
"value": "#28939A",
"type": "color"
},
"700": {
"value": "#22686D",
"type": "color"
},
"800": {
"value": "#1A4447",
"type": "color"
},
"900": {
"value": "#12292B",
"type": "color"
}
}
}
}