#005F4F is a mid-toned, cool teal. On the Color Lab it reads quietly premium, restrained and easy to live with. It carries a legible label as a UI accent and reproduces cleanly in print.
Not just a swatch — here's how #005F4F works with other colors. Named schemes with #005F4F in its natural role, and a note on why the supporting colors balance it.
Castleton Green opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Castleton Green keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Castleton Green plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Castleton Green anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.
Castleton Green 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 Castleton Green carrying the quiet middle.
How #005F4F 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 #005F4F at work across the surfaces designers actually ship.
:root {
--color-base: #005F4F;
--color-base-rgb: 0 95 79;
--color-base-oklch: oklch(43.4% 0.081 175.9);
--color-50: #F0FEFC;
--color-100: #D8FDF7;
--color-200: #B1FCEF;
--color-300: #77F8E3;
--color-400: #46ECD0;
--color-500: #22D2B5;
--color-600: #239F8A;
--color-700: #1F7062;
--color-800: #184840;
--color-900: #112C28;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
castleton-green: {
50: '#F0FEFC',
100: '#D8FDF7',
200: '#B1FCEF',
300: '#77F8E3',
400: '#46ECD0',
500: '#22D2B5',
600: '#239F8A',
700: '#1F7062',
800: '#184840',
900: '#112C28',
},
}
$base: #005F4F; $base-ink: #FFFFFF; $base-50: #F0FEFC; $base-100: #D8FDF7; $base-200: #B1FCEF; $base-300: #77F8E3; $base-400: #46ECD0; $base-500: #22D2B5; $base-600: #239F8A; $base-700: #1F7062; $base-800: #184840; $base-900: #112C28; $base-hover: #004E41; $base-subtle: #92F0E0;
{
"color": {
"base": {
"value": "#005F4F",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F0FEFC",
"type": "color"
},
"100": {
"value": "#D8FDF7",
"type": "color"
},
"200": {
"value": "#B1FCEF",
"type": "color"
},
"300": {
"value": "#77F8E3",
"type": "color"
},
"400": {
"value": "#46ECD0",
"type": "color"
},
"500": {
"value": "#22D2B5",
"type": "color"
},
"600": {
"value": "#239F8A",
"type": "color"
},
"700": {
"value": "#1F7062",
"type": "color"
},
"800": {
"value": "#184840",
"type": "color"
},
"900": {
"value": "#112C28",
"type": "color"
}
}
}
}