#037B59

CSS

:root {
  --greasy-greens: #037b59;
  --greasy-greens-rgb: 3 123 89;
  --greasy-greens-oklch: oklch(0.517 0.107 165.5);
}

.element {
  color: var(--greasy-greens);
  background-color: hsl(163 95% 25%);
  border-color: oklch(0.517 0.107 165.5);
}

Tailwind CSS v4

@theme {
  --color-greasy-greens: #037b59;
  --color-greasy-greens-50: #d9ffef;
  --color-greasy-greens-100: #c6f4e1;
  --color-greasy-greens-200: #a8e4cb;
  --color-greasy-greens-300: #7fc9ac;
  --color-greasy-greens-400: #59b38f;
  --color-greasy-greens-500: #279c75;
  --color-greasy-greens-600: #248463;
  --color-greasy-greens-700: #1d6a4f;
  --color-greasy-greens-800: #154e38;
  --color-greasy-greens-900: #0e3626;
  --color-greasy-greens-950: #012115;
}

SCSS

$greasy-greens: #037b59;
$greasy-greens-rgb: 3, 123, 89;
$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);
}