#139366 is a mid-toned, cool teal-green. On the Color Lab it reads organic and grounded. It carries a legible label as a UI accent and sits well as a supporting tone.
Not just a swatch — here's how #139366 works with other colors. Named schemes with #139366 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 opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
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 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 #139366 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 #139366 at work across the surfaces designers actually ship.
:root {
--color-base: #139366;
--color-base-rgb: 19 147 102;
--color-base-oklch: oklch(58.8% 0.124 162.3);
--color-50: #F1FEF9;
--color-100: #DAFBF0;
--color-200: #B7F5E0;
--color-300: #86E9C7;
--color-400: #59D9AC;
--color-500: #37BE8F;
--color-600: #31916F;
--color-700: #286651;
--color-800: #1E4336;
--color-900: #142922;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
sea-green: {
50: '#F1FEF9',
100: '#DAFBF0',
200: '#B7F5E0',
300: '#86E9C7',
400: '#59D9AC',
500: '#37BE8F',
600: '#31916F',
700: '#286651',
800: '#1E4336',
900: '#142922',
},
}
$base: #139366; $base-ink: #141310; $base-50: #F1FEF9; $base-100: #DAFBF0; $base-200: #B7F5E0; $base-300: #86E9C7; $base-400: #59D9AC; $base-500: #37BE8F; $base-600: #31916F; $base-700: #286651; $base-800: #1E4336; $base-900: #142922; $base-hover: #0F7753; $base-subtle: #AEEAD5;
{
"color": {
"base": {
"value": "#139366",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F1FEF9",
"type": "color"
},
"100": {
"value": "#DAFBF0",
"type": "color"
},
"200": {
"value": "#B7F5E0",
"type": "color"
},
"300": {
"value": "#86E9C7",
"type": "color"
},
"400": {
"value": "#59D9AC",
"type": "color"
},
"500": {
"value": "#37BE8F",
"type": "color"
},
"600": {
"value": "#31916F",
"type": "color"
},
"700": {
"value": "#286651",
"type": "color"
},
"800": {
"value": "#1E4336",
"type": "color"
},
"900": {
"value": "#142922",
"type": "color"
}
}
}
}