#308264

CSS

:root {
  --shadows-of-time: #308264;
  --shadows-of-time-rgb: 48 130 100;
  --shadows-of-time-oklch: oklch(0.548 0.093 165.6);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(158 46% 35%);
  border-color: oklch(0.548 0.093 165.6);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #308264;
  --color-shadows-of-time-50: #ddfef0;
  --color-shadows-of-time-100: #cbf2e2;
  --color-shadows-of-time-200: #aee2cc;
  --color-shadows-of-time-300: #88c7ae;
  --color-shadows-of-time-400: #65b091;
  --color-shadows-of-time-500: #3e9a77;
  --color-shadows-of-time-600: #368265;
  --color-shadows-of-time-700: #2b6851;
  --color-shadows-of-time-800: #1f4c39;
  --color-shadows-of-time-900: #143527;
  --color-shadows-of-time-950: #052015;
}

SCSS

$shadows-of-time: #308264;
$shadows-of-time-rgb: 48, 130, 100;
$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);
}