#1371CE 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 #1371CE works with other colors. Named schemes with #1371CE 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 #1371CE 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 #1371CE at work across the surfaces designers actually ship.
:root {
--color-base: #1371CE;
--color-base-rgb: 19 113 206;
--color-base-oklch: oklch(55.0% 0.165 253.8);
--color-50: #F0F7FE;
--color-100: #D9EBFD;
--color-200: #B4D6F8;
--color-300: #82B8ED;
--color-400: #5499DE;
--color-500: #317AC3;
--color-600: #2D6195;
--color-700: #264769;
--color-800: #1C3044;
--color-900: #131F2A;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
true-blue: {
50: '#F0F7FE',
100: '#D9EBFD',
200: '#B4D6F8',
300: '#82B8ED',
400: '#5499DE',
500: '#317AC3',
600: '#2D6195',
700: '#264769',
800: '#1C3044',
900: '#131F2A',
},
}
$base: #1371CE; $base-ink: #FFFFFF; $base-50: #F0F7FE; $base-100: #D9EBFD; $base-200: #B4D6F8; $base-300: #82B8ED; $base-400: #5499DE; $base-500: #317AC3; $base-600: #2D6195; $base-700: #264769; $base-800: #1C3044; $base-900: #131F2A; $base-hover: #0F5AA4; $base-subtle: #B9D4EF;
{
"color": {
"base": {
"value": "#1371CE",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F0F7FE",
"type": "color"
},
"100": {
"value": "#D9EBFD",
"type": "color"
},
"200": {
"value": "#B4D6F8",
"type": "color"
},
"300": {
"value": "#82B8ED",
"type": "color"
},
"400": {
"value": "#5499DE",
"type": "color"
},
"500": {
"value": "#317AC3",
"type": "color"
},
"600": {
"value": "#2D6195",
"type": "color"
},
"700": {
"value": "#264769",
"type": "color"
},
"800": {
"value": "#1C3044",
"type": "color"
},
"900": {
"value": "#131F2A",
"type": "color"
}
}
}
}