#2D899B is a mid-toned, cool blue. On the Color Lab it reads clean and engineered. It carries a legible label as a UI accent and sits well as a supporting tone.
Not just a swatch — here's how #2D899B works with other colors. Named schemes with #2D899B in its natural role, and a note on why the supporting colors balance it.
Dark Cyan opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Dark Cyan keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Dark Cyan is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Dark Cyan.
Dark Cyan plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Dark Cyan 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 Dark Cyan carrying the quiet middle.
How #2D899B 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 #2D899B at work across the surfaces designers actually ship.
:root {
--color-base: #2D899B;
--color-base-rgb: 45 137 155;
--color-base-oklch: oklch(58.5% 0.088 213.4);
--color-50: #F3FAFC;
--color-100: #DFF3F6;
--color-200: #C0E5ED;
--color-300: #94CFDB;
--color-400: #6BB7C7;
--color-500: #4A9BAB;
--color-600: #3F7883;
--color-700: #31565E;
--color-800: #23393E;
--color-900: #172426;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
dark-cyan: {
50: '#F3FAFC',
100: '#DFF3F6',
200: '#C0E5ED',
300: '#94CFDB',
400: '#6BB7C7',
500: '#4A9BAB',
600: '#3F7883',
700: '#31565E',
800: '#23393E',
900: '#172426',
},
}
$base: #2D899B; $base-ink: #141310; $base-50: #F3FAFC; $base-100: #DFF3F6; $base-200: #C0E5ED; $base-300: #94CFDB; $base-400: #6BB7C7; $base-500: #4A9BAB; $base-600: #3F7883; $base-700: #31565E; $base-800: #23393E; $base-900: #172426; $base-hover: #246D7B; $base-subtle: #BDDDE4;
{
"color": {
"base": {
"value": "#2D899B",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3FAFC",
"type": "color"
},
"100": {
"value": "#DFF3F6",
"type": "color"
},
"200": {
"value": "#C0E5ED",
"type": "color"
},
"300": {
"value": "#94CFDB",
"type": "color"
},
"400": {
"value": "#6BB7C7",
"type": "color"
},
"500": {
"value": "#4A9BAB",
"type": "color"
},
"600": {
"value": "#3F7883",
"type": "color"
},
"700": {
"value": "#31565E",
"type": "color"
},
"800": {
"value": "#23393E",
"type": "color"
},
"900": {
"value": "#172426",
"type": "color"
}
}
}
}