Blackish Brown

CSS

:root {
  --blackish-brown: #453b32;
  --blackish-brown-rgb: 69 59 50;
  --blackish-brown-oklch: oklch(0.36 0.021 64.1);
}

.element {
  color: var(--blackish-brown);
  background-color: hsl(28 16% 23%);
  border-color: oklch(0.36 0.021 64.1);
}

Tailwind CSS v4

@theme {
  --color-blackish-brown: #453b32;
  --color-blackish-brown-50: #f9f4ef;
  --color-blackish-brown-100: #ede7e1;
  --color-blackish-brown-200: #dbd3cb;
  --color-blackish-brown-300: #bfb6ad;
  --color-blackish-brown-400: #a79c92;
  --color-blackish-brown-500: #908478;
  --color-blackish-brown-600: #7a6f66;
  --color-blackish-brown-700: #625951;
  --color-blackish-brown-800: #48413b;
  --color-blackish-brown-900: #322d29;
  --color-blackish-brown-950: #1e1a16;
}

SCSS

$blackish-brown: #453b32;
$blackish-brown-rgb: 69, 59, 50;
$blackish-brown-light: mix(#fff, $blackish-brown, 20%);
$blackish-brown-dark: mix(#000, $blackish-brown, 20%);

.element {
  color: $blackish-brown;
  box-shadow: 0 0 0 2px rgba($blackish-brown, 0.35);
}