#2A8361

CSS

:root {
  --shadows-of-time: #2a8361;
  --shadows-of-time-rgb: 42 131 97;
  --shadows-of-time-oklch: oklch(0.548 0.1 163.9);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(157 51% 34%);
  border-color: oklch(0.548 0.1 163.9);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #2a8361;
  --color-shadows-of-time-50: #dcffef;
  --color-shadows-of-time-100: #caf3e0;
  --color-shadows-of-time-200: #ace2ca;
  --color-shadows-of-time-300: #85c8ac;
  --color-shadows-of-time-400: #62b18e;
  --color-shadows-of-time-500: #389b74;
  --color-shadows-of-time-600: #318362;
  --color-shadows-of-time-700: #27694f;
  --color-shadows-of-time-800: #1c4d38;
  --color-shadows-of-time-900: #133626;
  --color-shadows-of-time-950: #042114;
}

SCSS

$shadows-of-time: #2a8361;
$shadows-of-time-rgb: 42, 131, 97;
$shadows-of-time-light: mix(#fff, $shadows-of-time, 20%);
$shadows-of-time-dark: mix(#000, $shadows-of-time, 20%);

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