#299FBC 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 #299FBC works with other colors. Named schemes with #299FBC in its natural role, and a note on why the supporting colors balance it.
Bondi Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Bondi Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Bondi 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 Bondi Blue.
Bondi 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 Bondi Blue carrying the quiet middle.
Bondi 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 #299FBC 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 #299FBC at work across the surfaces designers actually ship.
:root {
--color-base: #299FBC;
--color-base-rgb: 41 159 188;
--color-base-oklch: oklch(65.2% 0.108 218.8);
--color-50: #F2FBFD;
--color-100: #DDF3F8;
--color-200: #BCE6F0;
--color-300: #8ED0E1;
--color-400: #64B9CE;
--color-500: #429CB3;
--color-600: #397989;
--color-700: #2E5761;
--color-800: #213A40;
--color-900: #162427;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
bondi-blue: {
50: '#F2FBFD',
100: '#DDF3F8',
200: '#BCE6F0',
300: '#8ED0E1',
400: '#64B9CE',
500: '#429CB3',
600: '#397989',
700: '#2E5761',
800: '#213A40',
900: '#162427',
},
}
$base: #299FBC; $base-ink: #141310; $base-50: #F2FBFD; $base-100: #DDF3F8; $base-200: #BCE6F0; $base-300: #8ED0E1; $base-400: #64B9CE; $base-500: #429CB3; $base-600: #397989; $base-700: #2E5761; $base-800: #213A40; $base-900: #162427; $base-hover: #217F97; $base-subtle: #C0E1E9;
{
"color": {
"base": {
"value": "#299FBC",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F2FBFD",
"type": "color"
},
"100": {
"value": "#DDF3F8",
"type": "color"
},
"200": {
"value": "#BCE6F0",
"type": "color"
},
"300": {
"value": "#8ED0E1",
"type": "color"
},
"400": {
"value": "#64B9CE",
"type": "color"
},
"500": {
"value": "#429CB3",
"type": "color"
},
"600": {
"value": "#397989",
"type": "color"
},
"700": {
"value": "#2E5761",
"type": "color"
},
"800": {
"value": "#213A40",
"type": "color"
},
"900": {
"value": "#162427",
"type": "color"
}
}
}
}