#268566

CSS

:root {
  --shadows-of-time: #268566;
  --shadows-of-time-rgb: 38 133 102;
  --shadows-of-time-oklch: oklch(0.554 0.1 166.9);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(160 56% 34%);
  border-color: oklch(0.554 0.1 166.9);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #268566;
  --color-shadows-of-time-50: #dafff0;
  --color-shadows-of-time-100: #c8f3e2;
  --color-shadows-of-time-200: #aae3cd;
  --color-shadows-of-time-300: #83c8ae;
  --color-shadows-of-time-400: #5eb192;
  --color-shadows-of-time-500: #319b78;
  --color-shadows-of-time-600: #2c8366;
  --color-shadows-of-time-700: #236951;
  --color-shadows-of-time-800: #194d3a;
  --color-shadows-of-time-900: #103627;
  --color-shadows-of-time-950: #032116;
}

SCSS

$shadows-of-time: #268566;
$shadows-of-time-rgb: 38, 133, 102;
$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);
}