#31413D is a mid neutral with only a whisper of temperate cast. On the Color Lab it reads clean and engineered, quietly premium. It reproduces cleanly in print.
Not just a swatch — here's how #31413D works with other colors. Named schemes with #31413D in its natural role, and a note on why the supporting colors balance it.
Onyx is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Onyx.
Onyx plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Onyx sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.
Onyx carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.
Onyx 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 Onyx carrying the quiet middle.
How #31413D 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 #31413D at work across the surfaces designers actually ship.
:root {
--color-base: #31413D;
--color-base-rgb: 49 65 61;
--color-base-oklch: oklch(36.0% 0.022 178.0);
--color-50: #F6F9F8;
--color-100: #E8EEEC;
--color-200: #D1DCD9;
--color-300: #AFC1BC;
--color-400: #8DA59F;
--color-500: #6E8781;
--color-600: #586A65;
--color-700: #424D4A;
--color-800: #2D3432;
--color-900: #1D2020;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
onyx: {
50: '#F6F9F8',
100: '#E8EEEC',
200: '#D1DCD9',
300: '#AFC1BC',
400: '#8DA59F',
500: '#6E8781',
600: '#586A65',
700: '#424D4A',
800: '#2D3432',
900: '#1D2020',
},
}
$base: #31413D; $base-ink: #FFFFFF; $base-50: #F6F9F8; $base-100: #E8EEEC; $base-200: #D1DCD9; $base-300: #AFC1BC; $base-400: #8DA59F; $base-500: #6E8781; $base-600: #586A65; $base-700: #424D4A; $base-800: #2D3432; $base-900: #1D2020; $base-hover: #273330; $base-subtle: #BDCAC7;
{
"color": {
"base": {
"value": "#31413D",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F6F9F8",
"type": "color"
},
"100": {
"value": "#E8EEEC",
"type": "color"
},
"200": {
"value": "#D1DCD9",
"type": "color"
},
"300": {
"value": "#AFC1BC",
"type": "color"
},
"400": {
"value": "#8DA59F",
"type": "color"
},
"500": {
"value": "#6E8781",
"type": "color"
},
"600": {
"value": "#586A65",
"type": "color"
},
"700": {
"value": "#424D4A",
"type": "color"
},
"800": {
"value": "#2D3432",
"type": "color"
},
"900": {
"value": "#1D2020",
"type": "color"
}
}
}
}