#225A71 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 #225A71 works with other colors. Named schemes with #225A71 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 #225A71 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 #225A71 at work across the surfaces designers actually ship.
:root {
--color-base: #225A71;
--color-base-rgb: 34 90 113;
--color-base-oklch: oklch(44.1% 0.069 228.6);
--color-50: #F3F9FC;
--color-100: #DFF0F6;
--color-200: #C0E0EC;
--color-300: #95C7DA;
--color-400: #6CACC6;
--color-500: #4B8FAA;
--color-600: #3F6F83;
--color-700: #32515D;
--color-800: #23363D;
--color-900: #172226;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
dark-slate-gray: {
50: '#F3F9FC',
100: '#DFF0F6',
200: '#C0E0EC',
300: '#95C7DA',
400: '#6CACC6',
500: '#4B8FAA',
600: '#3F6F83',
700: '#32515D',
800: '#23363D',
900: '#172226',
},
}
$base: #225A71; $base-ink: #FFFFFF; $base-50: #F3F9FC; $base-100: #DFF0F6; $base-200: #C0E0EC; $base-300: #95C7DA; $base-400: #6CACC6; $base-500: #4B8FAA; $base-600: #3F6F83; $base-700: #32515D; $base-800: #23363D; $base-900: #172226; $base-hover: #1B495B; $base-subtle: #B2D2DF;
{
"color": {
"base": {
"value": "#225A71",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F3F9FC",
"type": "color"
},
"100": {
"value": "#DFF0F6",
"type": "color"
},
"200": {
"value": "#C0E0EC",
"type": "color"
},
"300": {
"value": "#95C7DA",
"type": "color"
},
"400": {
"value": "#6CACC6",
"type": "color"
},
"500": {
"value": "#4B8FAA",
"type": "color"
},
"600": {
"value": "#3F6F83",
"type": "color"
},
"700": {
"value": "#32515D",
"type": "color"
},
"800": {
"value": "#23363D",
"type": "color"
},
"900": {
"value": "#172226",
"type": "color"
}
}
}
}