#1D4E11 is a deep, temperate green. On the Color Lab it reads organic and grounded, quietly premium. It carries a legible label as a UI accent and sits well as a supporting tone.
Not just a swatch — here's how #1D4E11 works with other colors. Named schemes with #1D4E11 in its natural role, and a note on why the supporting colors balance it.
Castleton Green carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.
Castleton Green leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.
Castleton Green adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Castleton Green.
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 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 #1D4E11 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 #1D4E11 at work across the surfaces designers actually ship.
:root {
--color-base: #1D4E11;
--color-base-rgb: 29 78 17;
--color-base-oklch: oklch(37.6% 0.105 140.1);
--color-50: #F4FDF2;
--color-100: #E2F8DD;
--color-200: #C7F0BC;
--color-300: #9FE18E;
--color-400: #79CE64;
--color-500: #59B342;
--color-600: #498939;
--color-700: #38612E;
--color-800: #274021;
--color-900: #192716;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
castleton-green: {
50: '#F4FDF2',
100: '#E2F8DD',
200: '#C7F0BC',
300: '#9FE18E',
400: '#79CE64',
500: '#59B342',
600: '#498939',
700: '#38612E',
800: '#274021',
900: '#192716',
},
}
$base: #1D4E11; $base-ink: #FFFFFF; $base-50: #F4FDF2; $base-100: #E2F8DD; $base-200: #C7F0BC; $base-300: #9FE18E; $base-400: #79CE64; $base-500: #59B342; $base-600: #498939; $base-700: #38612E; $base-800: #274021; $base-900: #192716; $base-hover: #18400E; $base-subtle: #AFDFA3;
{
"color": {
"base": {
"value": "#1D4E11",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F4FDF2",
"type": "color"
},
"100": {
"value": "#E2F8DD",
"type": "color"
},
"200": {
"value": "#C7F0BC",
"type": "color"
},
"300": {
"value": "#9FE18E",
"type": "color"
},
"400": {
"value": "#79CE64",
"type": "color"
},
"500": {
"value": "#59B342",
"type": "color"
},
"600": {
"value": "#498939",
"type": "color"
},
"700": {
"value": "#38612E",
"type": "color"
},
"800": {
"value": "#274021",
"type": "color"
},
"900": {
"value": "#192716",
"type": "color"
}
}
}
}