#18856D

CSS

:root {
  --shadows-of-time: #18856d;
  --shadows-of-time-rgb: 24 133 109;
  --shadows-of-time-oklch: oklch(0.553 0.1 173.2);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(167 69% 31%);
  border-color: oklch(0.553 0.1 173.2);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #18856d;
  --color-shadows-of-time-50: #d9fff4;
  --color-shadows-of-time-100: #c6f3e6;
  --color-shadows-of-time-200: #a7e3d2;
  --color-shadows-of-time-300: #7ec9b5;
  --color-shadows-of-time-400: #57b299;
  --color-shadows-of-time-500: #239b80;
  --color-shadows-of-time-600: #22836c;
  --color-shadows-of-time-700: #1b6957;
  --color-shadows-of-time-800: #134d3e;
  --color-shadows-of-time-900: #0c362b;
  --color-shadows-of-time-950: #002118;
}

SCSS

$shadows-of-time: #18856d;
$shadows-of-time-rgb: 24, 133, 109;
$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);
}