#2D8267

CSS

:root {
  --shadows-of-time: #2d8267;
  --shadows-of-time-rgb: 45 130 103;
  --shadows-of-time-oklch: oklch(0.548 0.092 168.4);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(161 49% 34%);
  border-color: oklch(0.548 0.092 168.4);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #2d8267;
  --color-shadows-of-time-50: #dcfef1;
  --color-shadows-of-time-100: #cbf2e3;
  --color-shadows-of-time-200: #aee2cf;
  --color-shadows-of-time-300: #87c7b1;
  --color-shadows-of-time-400: #64b094;
  --color-shadows-of-time-500: #3b9a7b;
  --color-shadows-of-time-600: #348268;
  --color-shadows-of-time-700: #296853;
  --color-shadows-of-time-800: #1d4c3b;
  --color-shadows-of-time-900: #133529;
  --color-shadows-of-time-950: #052016;
}

SCSS

$shadows-of-time: #2d8267;
$shadows-of-time-rgb: 45, 130, 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);
}