#0A8A0C

CSS

:root {
  --fine-pine: #0a8a0c;
  --fine-pine-rgb: 10 138 12;
  --fine-pine-oklch: oklch(0.55 0.182 142.7);
}

.element {
  color: var(--fine-pine);
  background-color: hsl(121 86% 29%);
  border-color: oklch(0.55 0.182 142.7);
}

Tailwind CSS v4

@theme {
  --color-fine-pine: #0a8a0c;
  --color-fine-pine-50: #d6ffd5;
  --color-fine-pine-100: #c3f9c2;
  --color-fine-pine-200: #a3e9a3;
  --color-fine-pine-300: #78d07a;
  --color-fine-pine-400: #53b84e;
  --color-fine-pine-500: #19a219;
  --color-fine-pine-600: #1a8919;
  --color-fine-pine-700: #166e15;
  --color-fine-pine-800: #145106;
  --color-fine-pine-900: #0d3805;
  --color-fine-pine-950: #012200;
}

SCSS

$fine-pine: #0a8a0c;
$fine-pine-rgb: 10, 138, 12;
$fine-pine-light: mix(#fff, $fine-pine, 20%);
$fine-pine-dark: mix(#000, $fine-pine, 20%);

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