#91C8E4 is a soft, cool blue. On the Color Lab it reads clean and engineered. It holds up as a large surface and is too pale to lead as a primary accent.
Not just a swatch — here's how #91C8E4 works with other colors. Named schemes with #91C8E4 in its natural role, and a note on why the supporting colors balance it.
Sky Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Sky Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Sky 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.
Sky 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 Sky Blue.
Sky 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 Sky Blue carrying the quiet middle.
How #91C8E4 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 #91C8E4 at work across the surfaces designers actually ship.
:root {
--color-base: #91C8E4;
--color-base-rgb: 145 200 228;
--color-base-oklch: oklch(80.4% 0.069 230.8);
--color-50: #F2F9FC;
--color-100: #DDEFF8;
--color-200: #BDDEEF;
--color-300: #90C5DF;
--color-400: #67AACB;
--color-500: #458CB0;
--color-600: #3B6E87;
--color-700: #2F5060;
--color-800: #22353F;
--color-900: #162127;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
sky-blue: {
50: '#F2F9FC',
100: '#DDEFF8',
200: '#BDDEEF',
300: '#90C5DF',
400: '#67AACB',
500: '#458CB0',
600: '#3B6E87',
700: '#2F5060',
800: '#22353F',
900: '#162127',
},
}
$base: #91C8E4; $base-ink: #141310; $base-50: #F2F9FC; $base-100: #DDEFF8; $base-200: #BDDEEF; $base-300: #90C5DF; $base-400: #67AACB; $base-500: #458CB0; $base-600: #3B6E87; $base-700: #2F5060; $base-800: #22353F; $base-900: #162127; $base-hover: #54AAD6; $base-subtle: #E1EEF4;
{
"color": {
"base": {
"value": "#91C8E4",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F2F9FC",
"type": "color"
},
"100": {
"value": "#DDEFF8",
"type": "color"
},
"200": {
"value": "#BDDEEF",
"type": "color"
},
"300": {
"value": "#90C5DF",
"type": "color"
},
"400": {
"value": "#67AACB",
"type": "color"
},
"500": {
"value": "#458CB0",
"type": "color"
},
"600": {
"value": "#3B6E87",
"type": "color"
},
"700": {
"value": "#2F5060",
"type": "color"
},
"800": {
"value": "#22353F",
"type": "color"
},
"900": {
"value": "#162127",
"type": "color"
}
}
}
}