#0B8668

CSS

:root {
  --shadows-of-time: #0b8668;
  --shadows-of-time-rgb: 11 134 104;
  --shadows-of-time-oklch: oklch(0.552 0.108 169.6);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(165 85% 28%);
  border-color: oklch(0.552 0.108 169.6);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #0b8668;
  --color-shadows-of-time-50: #d7fff1;
  --color-shadows-of-time-100: #c5f4e3;
  --color-shadows-of-time-200: #a5e4cf;
  --color-shadows-of-time-300: #7bcab1;
  --color-shadows-of-time-400: #54b394;
  --color-shadows-of-time-500: #189d7b;
  --color-shadows-of-time-600: #1a8468;
  --color-shadows-of-time-700: #166a53;
  --color-shadows-of-time-800: #104e3b;
  --color-shadows-of-time-900: #0a3628;
  --color-shadows-of-time-950: #002116;
}

SCSS

$shadows-of-time: #0b8668;
$shadows-of-time-rgb: 11, 134, 104;
$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);
}