#31873E is a mid-toned, temperate teal-green. On the Color Lab it reads organic and grounded, with a faded, vintage edge. It carries a legible label as a UI accent and sits well as a supporting tone.
Not just a swatch — here's how #31873E works with other colors. Named schemes with #31873E in its natural role, and a note on why the supporting colors balance it.
Sea Green leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.
Sea 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.
Sea 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.
Sea Green sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
Sea 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 Sea Green carrying the quiet middle.
How #31873E 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 #31873E at work across the surfaces designers actually ship.
:root {
--color-base: #31873E;
--color-base-rgb: 49 135 62;
--color-base-oklch: oklch(55.4% 0.136 146.2);
--color-50: #F3FBF5;
--color-100: #E0F5E4;
--color-200: #C3E9C9;
--color-300: #99D6A2;
--color-400: #72C07E;
--color-500: #51A45D;
--color-600: #447E4C;
--color-700: #345A3A;
--color-800: #253C29;
--color-900: #18251A;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
sea-green: {
50: '#F3FBF5',
100: '#E0F5E4',
200: '#C3E9C9',
300: '#99D6A2',
400: '#72C07E',
500: '#51A45D',
600: '#447E4C',
700: '#345A3A',
800: '#253C29',
900: '#18251A',
},
}
$base: #31873E; $base-ink: #141310; $base-50: #F3FBF5; $base-100: #E0F5E4; $base-200: #C3E9C9; $base-300: #99D6A2; $base-400: #72C07E; $base-500: #51A45D; $base-600: #447E4C; $base-700: #345A3A; $base-800: #253C29; $base-900: #18251A; $base-hover: #276C31; $base-subtle: #BDE0C2;
{
"color": {
"base": {
"value": "#31873E",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3FBF5",
"type": "color"
},
"100": {
"value": "#E0F5E4",
"type": "color"
},
"200": {
"value": "#C3E9C9",
"type": "color"
},
"300": {
"value": "#99D6A2",
"type": "color"
},
"400": {
"value": "#72C07E",
"type": "color"
},
"500": {
"value": "#51A45D",
"type": "color"
},
"600": {
"value": "#447E4C",
"type": "color"
},
"700": {
"value": "#345A3A",
"type": "color"
},
"800": {
"value": "#253C29",
"type": "color"
},
"900": {
"value": "#18251A",
"type": "color"
}
}
}
}