#1973BE 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 sits well as a supporting tone.
Not just a swatch — here's how #1973BE works with other colors. Named schemes with #1973BE in its natural role, and a note on why the supporting colors balance it.
True Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
True 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 True Blue.
True Blue plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
True Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.
True 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 True Blue carrying the quiet middle.
How #1973BE 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 #1973BE at work across the surfaces designers actually ship.
:root {
--color-base: #1973BE;
--color-base-rgb: 25 115 190;
--color-base-oklch: oklch(54.5% 0.141 249.6);
--color-50: #F1F8FE;
--color-100: #DAECFB;
--color-200: #B7D9F5;
--color-300: #86BDE9;
--color-400: #599FD9;
--color-500: #3781BE;
--color-600: #316691;
--color-700: #284B66;
--color-800: #1E3243;
--color-900: #142029;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
true-blue: {
50: '#F1F8FE',
100: '#DAECFB',
200: '#B7D9F5',
300: '#86BDE9',
400: '#599FD9',
500: '#3781BE',
600: '#316691',
700: '#284B66',
800: '#1E3243',
900: '#142029',
},
}
$base: #1973BE; $base-ink: #FFFFFF; $base-50: #F1F8FE; $base-100: #DAECFB; $base-200: #B7D9F5; $base-300: #86BDE9; $base-400: #599FD9; $base-500: #3781BE; $base-600: #316691; $base-700: #284B66; $base-800: #1E3243; $base-900: #142029; $base-hover: #145C98; $base-subtle: #B9D5ED;
{
"color": {
"base": {
"value": "#1973BE",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F1F8FE",
"type": "color"
},
"100": {
"value": "#DAECFB",
"type": "color"
},
"200": {
"value": "#B7D9F5",
"type": "color"
},
"300": {
"value": "#86BDE9",
"type": "color"
},
"400": {
"value": "#599FD9",
"type": "color"
},
"500": {
"value": "#3781BE",
"type": "color"
},
"600": {
"value": "#316691",
"type": "color"
},
"700": {
"value": "#284B66",
"type": "color"
},
"800": {
"value": "#1E3243",
"type": "color"
},
"900": {
"value": "#142029",
"type": "color"
}
}
}
}