#237A5E

CSS

:root {
  --greasy-greens: #237a5e;
  --greasy-greens-rgb: 35 122 94;
  --greasy-greens-oklch: oklch(0.521 0.093 167.3);
}

.element {
  color: var(--greasy-greens);
  background-color: hsl(161 55% 31%);
  border-color: oklch(0.521 0.093 167.3);
}

Tailwind CSS v4

@theme {
  --color-greasy-greens: #237a5e;
  --color-greasy-greens-50: #dcfef1;
  --color-greasy-greens-100: #cbf3e3;
  --color-greasy-greens-200: #aee2ce;
  --color-greasy-greens-300: #87c7af;
  --color-greasy-greens-400: #64b093;
  --color-greasy-greens-500: #3b9a79;
  --color-greasy-greens-600: #348267;
  --color-greasy-greens-700: #296852;
  --color-greasy-greens-800: #1d4d3a;
  --color-greasy-greens-900: #133528;
  --color-greasy-greens-950: #052016;
}

SCSS

$greasy-greens: #237a5e;
$greasy-greens-rgb: 35, 122, 94;
$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);
}