#2E8268

CSS

:root {
  --shadows-of-time: #2e8268;
  --shadows-of-time-rgb: 46 130 104;
  --shadows-of-time-oklch: oklch(0.548 0.091 169.1);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(161 48% 35%);
  border-color: oklch(0.548 0.091 169.1);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #2e8268;
  --color-shadows-of-time-50: #dcfef2;
  --color-shadows-of-time-100: #cbf2e4;
  --color-shadows-of-time-200: #aee1cf;
  --color-shadows-of-time-300: #87c7b1;
  --color-shadows-of-time-400: #64b095;
  --color-shadows-of-time-500: #3c997c;
  --color-shadows-of-time-600: #348269;
  --color-shadows-of-time-700: #2a6854;
  --color-shadows-of-time-800: #1e4c3c;
  --color-shadows-of-time-900: #143529;
  --color-shadows-of-time-950: #052017;
}

SCSS

$shadows-of-time: #2e8268;
$shadows-of-time-rgb: 46, 130, 104;
$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);
}