#2E8364

CSS

:root {
  --shadows-of-time: #2e8364;
  --shadows-of-time-rgb: 46 131 100;
  --shadows-of-time-oklch: oklch(0.55 0.095 165.4);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(158 48% 35%);
  border-color: oklch(0.55 0.095 165.4);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #2e8364;
  --color-shadows-of-time-50: #dcfef0;
  --color-shadows-of-time-100: #cbf3e1;
  --color-shadows-of-time-200: #ade2cc;
  --color-shadows-of-time-300: #87c7ae;
  --color-shadows-of-time-400: #64b191;
  --color-shadows-of-time-500: #3b9a77;
  --color-shadows-of-time-600: #348265;
  --color-shadows-of-time-700: #296850;
  --color-shadows-of-time-800: #1e4d39;
  --color-shadows-of-time-900: #143527;
  --color-shadows-of-time-950: #052015;
}

SCSS

$shadows-of-time: #2e8364;
$shadows-of-time-rgb: 46, 131, 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);
}