#138299 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 #138299 works with other colors. Named schemes with #138299 in its natural role, and a note on why the supporting colors balance it.
Teal opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Teal is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Teal.
Teal plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Teal sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
Teal 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 Teal carrying the quiet middle.
How #138299 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 #138299 at work across the surfaces designers actually ship.
:root {
--color-base: #138299;
--color-base-rgb: 19 130 153;
--color-base-oklch: oklch(56.1% 0.096 216.7);
--color-50: #F1FCFE;
--color-100: #DAF6FB;
--color-200: #B6EBF6;
--color-300: #85D9EA;
--color-400: #58C4DA;
--color-500: #36A8BF;
--color-600: #308191;
--color-700: #285C67;
--color-800: #1E3D43;
--color-900: #142629;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
teal: {
50: '#F1FCFE',
100: '#DAF6FB',
200: '#B6EBF6',
300: '#85D9EA',
400: '#58C4DA',
500: '#36A8BF',
600: '#308191',
700: '#285C67',
800: '#1E3D43',
900: '#142629',
},
}
$base: #138299; $base-ink: #141310; $base-50: #F1FCFE; $base-100: #DAF6FB; $base-200: #B6EBF6; $base-300: #85D9EA; $base-400: #58C4DA; $base-500: #36A8BF; $base-600: #308191; $base-700: #285C67; $base-800: #1E3D43; $base-900: #142629; $base-hover: #0F697B; $base-subtle: #AFE0EA;
{
"color": {
"base": {
"value": "#138299",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F1FCFE",
"type": "color"
},
"100": {
"value": "#DAF6FB",
"type": "color"
},
"200": {
"value": "#B6EBF6",
"type": "color"
},
"300": {
"value": "#85D9EA",
"type": "color"
},
"400": {
"value": "#58C4DA",
"type": "color"
},
"500": {
"value": "#36A8BF",
"type": "color"
},
"600": {
"value": "#308191",
"type": "color"
},
"700": {
"value": "#285C67",
"type": "color"
},
"800": {
"value": "#1E3D43",
"type": "color"
},
"900": {
"value": "#142629",
"type": "color"
}
}
}
}