#259FD0 is a mid-toned, cool 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 #259FD0 works with other colors. Named schemes with #259FD0 in its natural role, and a note on why the supporting colors balance it.
Carolina Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Carolina Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Carolina Blue is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Carolina Blue.
Carolina Blue 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 Carolina Blue carrying the quiet middle.
Carolina Blue 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.
How #259FD0 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 #259FD0 at work across the surfaces designers actually ship.
:root {
--color-base: #259FD0;
--color-base-rgb: 37 159 208;
--color-base-oklch: oklch(66.1% 0.124 231.0);
--color-50: #F1FAFD;
--color-100: #DBF1FA;
--color-200: #BAE3F3;
--color-300: #8ACBE5;
--color-400: #5FB2D3;
--color-500: #3D95B8;
--color-600: #35748C;
--color-700: #2B5464;
--color-800: #203841;
--color-900: #152328;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
carolina-blue: {
50: '#F1FAFD',
100: '#DBF1FA',
200: '#BAE3F3',
300: '#8ACBE5',
400: '#5FB2D3',
500: '#3D95B8',
600: '#35748C',
700: '#2B5464',
800: '#203841',
900: '#152328',
},
}
$base: #259FD0; $base-ink: #141310; $base-50: #F1FAFD; $base-100: #DBF1FA; $base-200: #BAE3F3; $base-300: #8ACBE5; $base-400: #5FB2D3; $base-500: #3D95B8; $base-600: #35748C; $base-700: #2B5464; $base-800: #203841; $base-900: #152328; $base-hover: #1D80A6; $base-subtle: #C2E0EC;
{
"color": {
"base": {
"value": "#259FD0",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F1FAFD",
"type": "color"
},
"100": {
"value": "#DBF1FA",
"type": "color"
},
"200": {
"value": "#BAE3F3",
"type": "color"
},
"300": {
"value": "#8ACBE5",
"type": "color"
},
"400": {
"value": "#5FB2D3",
"type": "color"
},
"500": {
"value": "#3D95B8",
"type": "color"
},
"600": {
"value": "#35748C",
"type": "color"
},
"700": {
"value": "#2B5464",
"type": "color"
},
"800": {
"value": "#203841",
"type": "color"
},
"900": {
"value": "#152328",
"type": "color"
}
}
}
}