Deep Brown

CSS

:root {
  --deep-brown: #342a2a;
  --deep-brown-rgb: 52 42 42;
  --deep-brown-oklch: oklch(0.296 0.015 18);
}

.element {
  color: var(--deep-brown);
  background-color: hsl(0 11% 18%);
  border-color: oklch(0.296 0.015 18);
}

Tailwind CSS v4

@theme {
  --color-deep-brown: #342a2a;
  --color-deep-brown-50: #f9f3f3;
  --color-deep-brown-100: #ede6e6;
  --color-deep-brown-200: #dad2d1;
  --color-deep-brown-300: #bfb4b4;
  --color-deep-brown-400: #a79b9b;
  --color-deep-brown-500: #908282;
  --color-deep-brown-600: #7a6e6e;
  --color-deep-brown-700: #615858;
  --color-deep-brown-800: #474041;
  --color-deep-brown-900: #312c2c;
  --color-deep-brown-950: #1d191a;
}

SCSS

$deep-brown: #342a2a;
$deep-brown-rgb: 52, 42, 42;
$deep-brown-light: mix(#fff, $deep-brown, 20%);
$deep-brown-dark: mix(#000, $deep-brown, 20%);

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