#288359 is a mid-toned, cool 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 reproduces cleanly in print.
Not just a swatch — here's how #288359 works with other colors. Named schemes with #288359 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 #288359 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 #288359 at work across the surfaces designers actually ship.
:root {
--color-base: #288359;
--color-base-rgb: 40 131 89;
--color-base-oklch: oklch(54.5% 0.108 159.2);
--color-50: #F3FCF8;
--color-100: #DFF6EB;
--color-200: #C1ECD8;
--color-300: #95DABA;
--color-400: #6DC59C;
--color-500: #4CA97E;
--color-600: #408263;
--color-700: #325D49;
--color-800: #243D31;
--color-900: #17261F;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
sea-green: {
50: '#F3FCF8',
100: '#DFF6EB',
200: '#C1ECD8',
300: '#95DABA',
400: '#6DC59C',
500: '#4CA97E',
600: '#408263',
700: '#325D49',
800: '#243D31',
900: '#17261F',
},
}
$base: #288359; $base-ink: #FFFFFF; $base-50: #F3FCF8; $base-100: #DFF6EB; $base-200: #C1ECD8; $base-300: #95DABA; $base-400: #6DC59C; $base-500: #4CA97E; $base-600: #408263; $base-700: #325D49; $base-800: #243D31; $base-900: #17261F; $base-hover: #216A48; $base-subtle: #B8E1CE;
{
"color": {
"base": {
"value": "#288359",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F3FCF8",
"type": "color"
},
"100": {
"value": "#DFF6EB",
"type": "color"
},
"200": {
"value": "#C1ECD8",
"type": "color"
},
"300": {
"value": "#95DABA",
"type": "color"
},
"400": {
"value": "#6DC59C",
"type": "color"
},
"500": {
"value": "#4CA97E",
"type": "color"
},
"600": {
"value": "#408263",
"type": "color"
},
"700": {
"value": "#325D49",
"type": "color"
},
"800": {
"value": "#243D31",
"type": "color"
},
"900": {
"value": "#17261F",
"type": "color"
}
}
}
}