#1A856D

CSS

:root {
  --shadows-of-time: #1a856d;
  --shadows-of-time-rgb: 26 133 109;
  --shadows-of-time-oklch: oklch(0.553 0.099 173.1);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(167 67% 31%);
  border-color: oklch(0.553 0.099 173.1);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #1a856d;
  --color-shadows-of-time-50: #d9fff3;
  --color-shadows-of-time-100: #c6f3e6;
  --color-shadows-of-time-200: #a8e3d2;
  --color-shadows-of-time-300: #7fc8b5;
  --color-shadows-of-time-400: #58b299;
  --color-shadows-of-time-500: #259b80;
  --color-shadows-of-time-600: #23836c;
  --color-shadows-of-time-700: #1c6957;
  --color-shadows-of-time-800: #144d3e;
  --color-shadows-of-time-900: #0d362a;
  --color-shadows-of-time-950: #012118;
}

SCSS

$shadows-of-time: #1a856d;
$shadows-of-time-rgb: 26, 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);
}