#5983BB is a mid-toned, cool indigo. On the Color Lab it reads clean and engineered. It carries a legible label as a UI accent and reproduces cleanly in print.
Not just a swatch — here's how #5983BB works with other colors. Named schemes with #5983BB in its natural role, and a note on why the supporting colors balance it.
Glaucous opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Glaucous is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Glaucous.
Glaucous plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Glaucous sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
Glaucous 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 Glaucous carrying the quiet middle.
How #5983BB 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 #5983BB at work across the surfaces designers actually ship.
:root {
--color-base: #5983BB;
--color-base-rgb: 89 131 187;
--color-base-oklch: oklch(60.3% 0.098 255.9);
--color-50: #F4F7FB;
--color-100: #E2E9F4;
--color-200: #C5D4E7;
--color-300: #9CB4D3;
--color-400: #7694BC;
--color-500: #55759F;
--color-600: #475D7B;
--color-700: #364558;
--color-800: #262F3B;
--color-900: #191E24;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
glaucous: {
50: '#F4F7FB',
100: '#E2E9F4',
200: '#C5D4E7',
300: '#9CB4D3',
400: '#7694BC',
500: '#55759F',
600: '#475D7B',
700: '#364558',
800: '#262F3B',
900: '#191E24',
},
}
$base: #5983BB; $base-ink: #141310; $base-50: #F4F7FB; $base-100: #E2E9F4; $base-200: #C5D4E7; $base-300: #9CB4D3; $base-400: #7694BC; $base-500: #55759F; $base-600: #475D7B; $base-700: #364558; $base-800: #262F3B; $base-900: #191E24; $base-hover: #40689C; $base-subtle: #D1DAE7;
{
"color": {
"base": {
"value": "#5983BB",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F4F7FB",
"type": "color"
},
"100": {
"value": "#E2E9F4",
"type": "color"
},
"200": {
"value": "#C5D4E7",
"type": "color"
},
"300": {
"value": "#9CB4D3",
"type": "color"
},
"400": {
"value": "#7694BC",
"type": "color"
},
"500": {
"value": "#55759F",
"type": "color"
},
"600": {
"value": "#475D7B",
"type": "color"
},
"700": {
"value": "#364558",
"type": "color"
},
"800": {
"value": "#262F3B",
"type": "color"
},
"900": {
"value": "#191E24",
"type": "color"
}
}
}
}