#318467

CSS

:root {
  --shadows-of-time: #318467;
  --shadows-of-time-rgb: 49 132 103;
  --shadows-of-time-oklch: oklch(0.555 0.093 166.7);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(159 46% 35%);
  border-color: oklch(0.555 0.093 166.7);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #318467;
  --color-shadows-of-time-50: #ddfef0;
  --color-shadows-of-time-100: #cbf2e2;
  --color-shadows-of-time-200: #aee2cd;
  --color-shadows-of-time-300: #87c7af;
  --color-shadows-of-time-400: #65b093;
  --color-shadows-of-time-500: #3d9a79;
  --color-shadows-of-time-600: #358266;
  --color-shadows-of-time-700: #2a6852;
  --color-shadows-of-time-800: #1e4c3a;
  --color-shadows-of-time-900: #143528;
  --color-shadows-of-time-950: #052016;
}

SCSS

$shadows-of-time: #318467;
$shadows-of-time-rgb: 49, 132, 103;
$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);
}