#103F21

CSS

:root {
  --queen-of-trees: #103f21;
  --queen-of-trees-rgb: 16 63 33;
  --queen-of-trees-oklch: oklch(0.327 0.073 151.8);
}

.element {
  color: var(--queen-of-trees);
  background-color: hsl(142 59% 15%);
  border-color: oklch(0.327 0.073 151.8);
}

Tailwind CSS v4

@theme {
  --color-queen-of-trees: #103f21;
  --color-queen-of-trees-50: #e6fcec;
  --color-queen-of-trees-100: #d6f0dd;
  --color-queen-of-trees-200: #bddec6;
  --color-queen-of-trees-300: #9bc3a7;
  --color-queen-of-trees-400: #7eab89;
  --color-queen-of-trees-500: #60946e;
  --color-queen-of-trees-600: #527d5d;
  --color-queen-of-trees-700: #41644a;
  --color-queen-of-trees-800: #304a35;
  --color-queen-of-trees-900: #203324;
  --color-queen-of-trees-950: #101f13;
}

SCSS

$queen-of-trees: #103f21;
$queen-of-trees-rgb: 16, 63, 33;
$queen-of-trees-light: mix(#fff, $queen-of-trees, 20%);
$queen-of-trees-dark: mix(#000, $queen-of-trees, 20%);

.element {
  color: $queen-of-trees;
  box-shadow: 0 0 0 2px rgba($queen-of-trees, 0.35);
}