#378262

CSS

:root {
  --shadows-of-time: #378262;
  --shadows-of-time-rgb: 55 130 98;
  --shadows-of-time-oklch: oklch(0.55 0.091 162.8);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(154 41% 36%);
  border-color: oklch(0.55 0.091 162.8);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #378262;
  --color-shadows-of-time-50: #defeef;
  --color-shadows-of-time-100: #cdf2e0;
  --color-shadows-of-time-200: #b1e1cb;
  --color-shadows-of-time-300: #8bc7ac;
  --color-shadows-of-time-400: #6aaf8f;
  --color-shadows-of-time-500: #459975;
  --color-shadows-of-time-600: #3b8163;
  --color-shadows-of-time-700: #2f684f;
  --color-shadows-of-time-800: #224c38;
  --color-shadows-of-time-900: #173526;
  --color-shadows-of-time-950: #072015;
}

SCSS

$shadows-of-time: #378262;
$shadows-of-time-rgb: 55, 130, 98;
$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);
}