#007251

CSS

:root {
  --greasy-greens: #007251;
  --greasy-greens-rgb: 0 114 81;
  --greasy-greens-oklch: oklch(0.489 0.103 164.8);
}

.element {
  color: var(--greasy-greens);
  background-color: hsl(163 100% 22%);
  border-color: oklch(0.489 0.103 164.8);
}

Tailwind CSS v4

@theme {
  --color-greasy-greens: #007251;
  --color-greasy-greens-50: #daffef;
  --color-greasy-greens-100: #c8f4e0;
  --color-greasy-greens-200: #aae3cb;
  --color-greasy-greens-300: #82c9ac;
  --color-greasy-greens-400: #5eb28f;
  --color-greasy-greens-500: #309b75;
  --color-greasy-greens-600: #2b8363;
  --color-greasy-greens-700: #23694f;
  --color-greasy-greens-800: #194d38;
  --color-greasy-greens-900: #103626;
  --color-greasy-greens-950: #032114;
}

SCSS

$greasy-greens: #007251;
$greasy-greens-rgb: 0, 114, 81;
$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);
}