#2A5265 is a mid-toned, cool blue. On the Color Lab it reads clean and engineered, quietly premium. It carries a legible label as a UI accent and reproduces cleanly in print.
Not just a swatch — here's how #2A5265 works with other colors. Named schemes with #2A5265 in its natural role, and a note on why the supporting colors balance it.
Dark Slate Gray opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Dark Slate Gray keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Dark Slate 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 Dark Slate Gray.
Dark Slate Gray 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 Slate 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 Dark Slate Gray carrying the quiet middle.
How #2A5265 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 #2A5265 at work across the surfaces designers actually ship.
:root {
--color-base: #2A5265;
--color-base-rgb: 42 82 101;
--color-base-oklch: oklch(41.8% 0.055 230.6);
--color-50: #F4F9FB;
--color-100: #E2EEF3;
--color-200: #C6DCE7;
--color-300: #9DC1D2;
--color-400: #77A5BB;
--color-500: #56889E;
--color-600: #476A7A;
--color-700: #374D58;
--color-800: #27343A;
--color-900: #192124;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
dark-slate-gray: {
50: '#F4F9FB',
100: '#E2EEF3',
200: '#C6DCE7',
300: '#9DC1D2',
400: '#77A5BB',
500: '#56889E',
600: '#476A7A',
700: '#374D58',
800: '#27343A',
900: '#192124',
},
}
$base: #2A5265; $base-ink: #FFFFFF; $base-50: #F4F9FB; $base-100: #E2EEF3; $base-200: #C6DCE7; $base-300: #9DC1D2; $base-400: #77A5BB; $base-500: #56889E; $base-600: #476A7A; $base-700: #374D58; $base-800: #27343A; $base-900: #192124; $base-hover: #224251; $base-subtle: #B7CED9;
{
"color": {
"base": {
"value": "#2A5265",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F4F9FB",
"type": "color"
},
"100": {
"value": "#E2EEF3",
"type": "color"
},
"200": {
"value": "#C6DCE7",
"type": "color"
},
"300": {
"value": "#9DC1D2",
"type": "color"
},
"400": {
"value": "#77A5BB",
"type": "color"
},
"500": {
"value": "#56889E",
"type": "color"
},
"600": {
"value": "#476A7A",
"type": "color"
},
"700": {
"value": "#374D58",
"type": "color"
},
"800": {
"value": "#27343A",
"type": "color"
},
"900": {
"value": "#192124",
"type": "color"
}
}
}
}