#288F4E is a mid-toned, temperate 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 #288F4E works with other colors. Named schemes with #288F4E 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 #288F4E 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 #288F4E at work across the surfaces designers actually ship.
:root {
--color-base: #288F4E;
--color-base-rgb: 40 143 78;
--color-base-oklch: oklch(57.6% 0.136 151.4);
--color-50: #F3FCF6;
--color-100: #DFF7E7;
--color-200: #BFEDD0;
--color-300: #93DCAE;
--color-400: #6BC78D;
--color-500: #49AC6D;
--color-600: #3E8458;
--color-700: #315E41;
--color-800: #233E2D;
--color-900: #17261D;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
sea-green: {
50: '#F3FCF6',
100: '#DFF7E7',
200: '#BFEDD0',
300: '#93DCAE',
400: '#6BC78D',
500: '#49AC6D',
600: '#3E8458',
700: '#315E41',
800: '#233E2D',
900: '#17261D',
},
}
$base: #288F4E; $base-ink: #141310; $base-50: #F3FCF6; $base-100: #DFF7E7; $base-200: #BFEDD0; $base-300: #93DCAE; $base-400: #6BC78D; $base-500: #49AC6D; $base-600: #3E8458; $base-700: #315E41; $base-800: #233E2D; $base-900: #17261D; $base-hover: #20733E; $base-subtle: #B9E3C8;
{
"color": {
"base": {
"value": "#288F4E",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F3FCF6",
"type": "color"
},
"100": {
"value": "#DFF7E7",
"type": "color"
},
"200": {
"value": "#BFEDD0",
"type": "color"
},
"300": {
"value": "#93DCAE",
"type": "color"
},
"400": {
"value": "#6BC78D",
"type": "color"
},
"500": {
"value": "#49AC6D",
"type": "color"
},
"600": {
"value": "#3E8458",
"type": "color"
},
"700": {
"value": "#315E41",
"type": "color"
},
"800": {
"value": "#233E2D",
"type": "color"
},
"900": {
"value": "#17261D",
"type": "color"
}
}
}
}