#643D19 is a mid-toned, warm yellow. On the Color Lab it reads organic and grounded, with a faded, vintage edge. It carries a legible label as a UI accent and reproduces cleanly in print.
Not just a swatch — here's how #643D19 works with other colors. Named schemes with #643D19 in its natural role, and a note on why the supporting colors balance it.
This palette keeps Sepia as the dominant warm neutral, balanced by muted terracotta and olive earth tones and grounded by a deep espresso anchor.
Sepia anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.
Sepia plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Sepia holds the warm center of this desert palette with sand and clay beside it, a muted-sage accent and a dark-brown anchor.
Sepia 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 Sepia carrying the quiet middle.
How #643D19 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 #643D19 at work across the surfaces designers actually ship.
:root {
--color-base: #643D19;
--color-base-rgb: 100 61 25;
--color-base-oklch: oklch(39.9% 0.074 60.6);
--color-50: #FCF7F2;
--color-100: #F8EADE;
--color-200: #EFD5BE;
--color-300: #DEB691;
--color-400: #CB9767;
--color-500: #AF7946;
--color-600: #86603C;
--color-700: #60472F;
--color-800: #3F3022;
--color-900: #271E16;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
sepia: {
50: '#FCF7F2',
100: '#F8EADE',
200: '#EFD5BE',
300: '#DEB691',
400: '#CB9767',
500: '#AF7946',
600: '#86603C',
700: '#60472F',
800: '#3F3022',
900: '#271E16',
},
}
$base: #643D19; $base-ink: #FFFFFF; $base-50: #FCF7F2; $base-100: #F8EADE; $base-200: #EFD5BE; $base-300: #DEB691; $base-400: #CB9767; $base-500: #AF7946; $base-600: #86603C; $base-700: #60472F; $base-800: #3F3022; $base-900: #271E16; $base-hover: #523214; $base-subtle: #E0C5AB;
{
"color": {
"base": {
"value": "#643D19",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#FCF7F2",
"type": "color"
},
"100": {
"value": "#F8EADE",
"type": "color"
},
"200": {
"value": "#EFD5BE",
"type": "color"
},
"300": {
"value": "#DEB691",
"type": "color"
},
"400": {
"value": "#CB9767",
"type": "color"
},
"500": {
"value": "#AF7946",
"type": "color"
},
"600": {
"value": "#86603C",
"type": "color"
},
"700": {
"value": "#60472F",
"type": "color"
},
"800": {
"value": "#3F3022",
"type": "color"
},
"900": {
"value": "#271E16",
"type": "color"
}
}
}
}