#40302E

CSS

:root {
  --smoked-black-coffee: #40302e;
  --smoked-black-coffee-rgb: 64 48 46;
  --smoked-black-coffee-oklch: oklch(0.327 0.024 26.6);
}

.element {
  color: var(--smoked-black-coffee);
  background-color: hsl(7 16% 22%);
  border-color: oklch(0.327 0.024 26.6);
}

Tailwind CSS v4

@theme {
  --color-smoked-black-coffee: #40302e;
  --color-smoked-black-coffee-50: #fcf3f1;
  --color-smoked-black-coffee-100: #f0e5e3;
  --color-smoked-black-coffee-200: #ded1ce;
  --color-smoked-black-coffee-300: #c3b3b0;
  --color-smoked-black-coffee-400: #ac9997;
  --color-smoked-black-coffee-500: #95817e;
  --color-smoked-black-coffee-600: #7e6d6b;
  --color-smoked-black-coffee-700: #655755;
  --color-smoked-black-coffee-800: #4a3f3e;
  --color-smoked-black-coffee-900: #342c2b;
  --color-smoked-black-coffee-950: #1f1918;
}

SCSS

$smoked-black-coffee: #40302e;
$smoked-black-coffee-rgb: 64, 48, 46;
$smoked-black-coffee-light: mix(#fff, $smoked-black-coffee, 20%);
$smoked-black-coffee-dark: mix(#000, $smoked-black-coffee, 20%);

.element {
  color: $smoked-black-coffee;
  box-shadow: 0 0 0 2px rgba($smoked-black-coffee, 0.35);
}