#2D8365

CSS

:root {
  --shadows-of-time: #2d8365;
  --shadows-of-time-rgb: 45 131 101;
  --shadows-of-time-oklch: oklch(0.55 0.095 166.3);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(159 49% 35%);
  border-color: oklch(0.55 0.095 166.3);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #2d8365;
  --color-shadows-of-time-50: #dcfef0;
  --color-shadows-of-time-100: #caf3e2;
  --color-shadows-of-time-200: #ade2cd;
  --color-shadows-of-time-300: #86c7ae;
  --color-shadows-of-time-400: #63b192;
  --color-shadows-of-time-500: #3a9a78;
  --color-shadows-of-time-600: #338266;
  --color-shadows-of-time-700: #296851;
  --color-shadows-of-time-800: #1d4d3a;
  --color-shadows-of-time-900: #133527;
  --color-shadows-of-time-950: #052016;
}

SCSS

$shadows-of-time: #2d8365;
$shadows-of-time-rgb: 45, 131, 101;
$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);
}