#259698 is a mid-toned, cool cyan-blue. On the Color Lab it reads clean and engineered. It carries a legible label as a UI accent and sits well as a supporting tone.
Not just a swatch — here's how #259698 works with other colors. Named schemes with #259698 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 #259698 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 #259698 at work across the surfaces designers actually ship.
:root {
--color-base: #259698;
--color-base-rgb: 37 150 152;
--color-base-oklch: oklch(61.5% 0.096 196.8);
--color-50: #F2FCFC;
--color-100: #DDF7F8;
--color-200: #BDEEEF;
--color-300: #90DEDF;
--color-400: #67CACB;
--color-500: #45AEB0;
--color-600: #3B8687;
--color-700: #2F5F60;
--color-800: #223F3F;
--color-900: #162727;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
dark-cyan: {
50: '#F2FCFC',
100: '#DDF7F8',
200: '#BDEEEF',
300: '#90DEDF',
400: '#67CACB',
500: '#45AEB0',
600: '#3B8687',
700: '#2F5F60',
800: '#223F3F',
900: '#162727',
},
}
$base: #259698; $base-ink: #141310; $base-50: #F2FCFC; $base-100: #DDF7F8; $base-200: #BDEEEF; $base-300: #90DEDF; $base-400: #67CACB; $base-500: #45AEB0; $base-600: #3B8687; $base-700: #2F5F60; $base-800: #223F3F; $base-900: #162727; $base-hover: #1D787A; $base-subtle: #B8E4E5;
{
"color": {
"base": {
"value": "#259698",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F2FCFC",
"type": "color"
},
"100": {
"value": "#DDF7F8",
"type": "color"
},
"200": {
"value": "#BDEEEF",
"type": "color"
},
"300": {
"value": "#90DEDF",
"type": "color"
},
"400": {
"value": "#67CACB",
"type": "color"
},
"500": {
"value": "#45AEB0",
"type": "color"
},
"600": {
"value": "#3B8687",
"type": "color"
},
"700": {
"value": "#2F5F60",
"type": "color"
},
"800": {
"value": "#223F3F",
"type": "color"
},
"900": {
"value": "#162727",
"type": "color"
}
}
}
}