#2D795D

CSS

:root {
  --greasy-greens: #2d795d;
  --greasy-greens-rgb: 45 121 93;
  --greasy-greens-oklch: oklch(0.521 0.088 165.6);
}

.element {
  color: var(--greasy-greens);
  background-color: hsl(158 46% 33%);
  border-color: oklch(0.521 0.088 165.6);
}

Tailwind CSS v4

@theme {
  --color-greasy-greens: #2d795d;
  --color-greasy-greens-50: #defef0;
  --color-greasy-greens-100: #cdf2e2;
  --color-greasy-greens-200: #b1e1cd;
  --color-greasy-greens-300: #8bc6ae;
  --color-greasy-greens-400: #6aaf92;
  --color-greasy-greens-500: #449978;
  --color-greasy-greens-600: #3b8166;
  --color-greasy-greens-700: #2f6751;
  --color-greasy-greens-800: #224c3a;
  --color-greasy-greens-900: #173528;
  --color-greasy-greens-950: #072016;
}

SCSS

$greasy-greens: #2d795d;
$greasy-greens-rgb: 45, 121, 93;
$greasy-greens-light: mix(#fff, $greasy-greens, 20%);
$greasy-greens-dark: mix(#000, $greasy-greens, 20%);

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