#91C4BF is a soft, cool cyan. 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 #91C4BF works with other colors. Named schemes with #91C4BF in its natural role, and a note on why the supporting colors balance it.
Ash Gray keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Ash Gray 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.
Ash Gray opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Ash Gray 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 Ash Gray carrying the quiet middle.
Ash Gray is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Ash Gray.
How #91C4BF 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 #91C4BF at work across the surfaces designers actually ship.
:root {
--color-base: #91C4BF;
--color-base-rgb: 145 196 191;
--color-base-oklch: oklch(78.3% 0.054 188.6);
--color-50: #F5FAF9;
--color-100: #E4F1F0;
--color-200: #CAE2E0;
--color-300: #A4CBC7;
--color-400: #80B2AD;
--color-500: #609590;
--color-600: #4E7470;
--color-700: #3B5451;
--color-800: #293836;
--color-900: #1B2322;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
ash-gray: {
50: '#F5FAF9',
100: '#E4F1F0',
200: '#CAE2E0',
300: '#A4CBC7',
400: '#80B2AD',
500: '#609590',
600: '#4E7470',
700: '#3B5451',
800: '#293836',
900: '#1B2322',
},
}
$base: #91C4BF; $base-ink: #141310; $base-50: #F5FAF9; $base-100: #E4F1F0; $base-200: #CAE2E0; $base-300: #A4CBC7; $base-400: #80B2AD; $base-500: #609590; $base-600: #4E7470; $base-700: #3B5451; $base-800: #293836; $base-900: #1B2322; $base-hover: #65ACA5; $base-subtle: #E0ECEA;
{
"color": {
"base": {
"value": "#91C4BF",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F5FAF9",
"type": "color"
},
"100": {
"value": "#E4F1F0",
"type": "color"
},
"200": {
"value": "#CAE2E0",
"type": "color"
},
"300": {
"value": "#A4CBC7",
"type": "color"
},
"400": {
"value": "#80B2AD",
"type": "color"
},
"500": {
"value": "#609590",
"type": "color"
},
"600": {
"value": "#4E7470",
"type": "color"
},
"700": {
"value": "#3B5451",
"type": "color"
},
"800": {
"value": "#293836",
"type": "color"
},
"900": {
"value": "#1B2322",
"type": "color"
}
}
}
}