#421F01 is a deep, warm yellow. On the Color Lab it reads organic and grounded, quietly premium. It is too dark to lead as a primary accent and reproduces cleanly in print.
Not just a swatch — here's how #421F01 works with other colors. Named schemes with #421F01 in its natural role, and a note on why the supporting colors balance it.
This palette keeps Bistre as the dominant warm neutral, balanced by muted terracotta and olive earth tones and grounded by a deep espresso anchor.
Bistre plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Bistre holds the warm center of this desert palette with sand and clay beside it, a muted-sage accent and a dark-brown anchor.
Bistre 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.
Bistre 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 Bistre carrying the quiet middle.
How #421F01 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 #421F01 at work across the surfaces designers actually ship.
:root {
--color-base: #421F01;
--color-base-rgb: 66 31 1;
--color-base-oklch: oklch(28.3% 0.068 56.2);
--color-50: #FEF7F0;
--color-100: #FDE9D8;
--color-200: #FCD4B1;
--color-300: #F6B379;
--color-400: #E99449;
--color-500: #D07525;
--color-600: #9D5D25;
--color-700: #6F4520;
--color-800: #482F19;
--color-900: #2C1E11;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
bistre: {
50: '#FEF7F0',
100: '#FDE9D8',
200: '#FCD4B1',
300: '#F6B379',
400: '#E99449',
500: '#D07525',
600: '#9D5D25',
700: '#6F4520',
800: '#482F19',
900: '#2C1E11',
},
}
$base: #421F01; $base-ink: #FFFFFF; $base-50: #FEF7F0; $base-100: #FDE9D8; $base-200: #FCD4B1; $base-300: #F6B379; $base-400: #E99449; $base-500: #D07525; $base-600: #9D5D25; $base-700: #6F4520; $base-800: #482F19; $base-900: #2C1E11; $base-hover: #341901; $base-subtle: #EEB98B;
{
"color": {
"base": {
"value": "#421F01",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#FEF7F0",
"type": "color"
},
"100": {
"value": "#FDE9D8",
"type": "color"
},
"200": {
"value": "#FCD4B1",
"type": "color"
},
"300": {
"value": "#F6B379",
"type": "color"
},
"400": {
"value": "#E99449",
"type": "color"
},
"500": {
"value": "#D07525",
"type": "color"
},
"600": {
"value": "#9D5D25",
"type": "color"
},
"700": {
"value": "#6F4520",
"type": "color"
},
"800": {
"value": "#482F19",
"type": "color"
},
"900": {
"value": "#2C1E11",
"type": "color"
}
}
}
}