#27856A

CSS

:root {
  --shadows-of-time: #27856a;
  --shadows-of-time-rgb: 39 133 106;
  --shadows-of-time-oklch: oklch(0.555 0.097 169.7);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(163 55% 34%);
  border-color: oklch(0.555 0.097 169.7);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #27856a;
  --color-shadows-of-time-50: #dbfff2;
  --color-shadows-of-time-100: #c9f3e4;
  --color-shadows-of-time-200: #abe2cf;
  --color-shadows-of-time-300: #83c8b1;
  --color-shadows-of-time-400: #5eb195;
  --color-shadows-of-time-500: #319b7c;
  --color-shadows-of-time-600: #2c8369;
  --color-shadows-of-time-700: #236954;
  --color-shadows-of-time-800: #194d3c;
  --color-shadows-of-time-900: #103529;
  --color-shadows-of-time-950: #032117;
}

SCSS

$shadows-of-time: #27856a;
$shadows-of-time-rgb: 39, 133, 106;
$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);
}