#128A84 is a mid-toned, cool cyan. On the Color Lab it reads 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 #128A84 works with other colors. Named schemes with #128A84 in its natural role, and a note on why the supporting colors balance it.
Dark Cyan opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Dark Cyan plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Dark Cyan 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.
Dark Cyan sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
Dark Cyan 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 Dark Cyan carrying the quiet middle.
How #128A84 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 #128A84 at work across the surfaces designers actually ship.
:root {
--color-base: #128A84;
--color-base-rgb: 18 138 132;
--color-base-oklch: oklch(57.3% 0.096 189.3);
--color-50: #F1FEFD;
--color-100: #DAFBFA;
--color-200: #B7F5F2;
--color-300: #86E9E4;
--color-400: #59D9D2;
--color-500: #37BEB7;
--color-600: #31918C;
--color-700: #286663;
--color-800: #1E4341;
--color-900: #142928;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
dark-cyan: {
50: '#F1FEFD',
100: '#DAFBFA',
200: '#B7F5F2',
300: '#86E9E4',
400: '#59D9D2',
500: '#37BEB7',
600: '#31918C',
700: '#286663',
800: '#1E4341',
900: '#142928',
},
}
$base: #128A84; $base-ink: #141310; $base-50: #F1FEFD; $base-100: #DAFBFA; $base-200: #B7F5F2; $base-300: #86E9E4; $base-400: #59D9D2; $base-500: #37BEB7; $base-600: #31918C; $base-700: #286663; $base-800: #1E4341; $base-900: #142928; $base-hover: #0F706B; $base-subtle: #ABE9E6;
{
"color": {
"base": {
"value": "#128A84",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F1FEFD",
"type": "color"
},
"100": {
"value": "#DAFBFA",
"type": "color"
},
"200": {
"value": "#B7F5F2",
"type": "color"
},
"300": {
"value": "#86E9E4",
"type": "color"
},
"400": {
"value": "#59D9D2",
"type": "color"
},
"500": {
"value": "#37BEB7",
"type": "color"
},
"600": {
"value": "#31918C",
"type": "color"
},
"700": {
"value": "#286663",
"type": "color"
},
"800": {
"value": "#1E4341",
"type": "color"
},
"900": {
"value": "#142928",
"type": "color"
}
}
}
}