#96A156

CSS

:root {
  --springtide-melodies: #96a156;
  --springtide-melodies-rgb: 150 161 86;
  --springtide-melodies-oklch: oklch(0.683 0.1 116);
}

.element {
  color: var(--springtide-melodies);
  background-color: hsl(69 30% 48%);
  border-color: oklch(0.683 0.1 116);
}

Tailwind CSS v4

@theme {
  --color-springtide-melodies: #96a156;
  --color-springtide-melodies-50: #f2fada;
  --color-springtide-melodies-100: #e4edc8;
  --color-springtide-melodies-200: #d0dbaa;
  --color-springtide-melodies-300: #b2bf84;
  --color-springtide-melodies-400: #9ba65f;
  --color-springtide-melodies-500: #838e39;
  --color-springtide-melodies-600: #6f7832;
  --color-springtide-melodies-700: #596027;
  --color-springtide-melodies-800: #42461a;
  --color-springtide-melodies-900: #2d3111;
  --color-springtide-melodies-950: #1a1d04;
}

SCSS

$springtide-melodies: #96a156;
$springtide-melodies-rgb: 150, 161, 86;
$springtide-melodies-light: mix(#fff, $springtide-melodies, 20%);
$springtide-melodies-dark: mix(#000, $springtide-melodies, 20%);

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