#138570

CSS

:root {
  --shadows-of-time: #138570;
  --shadows-of-time-rgb: 19 133 112;
  --shadows-of-time-oklch: oklch(0.553 0.099 175.9);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(169 75% 30%);
  border-color: oklch(0.553 0.099 175.9);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #138570;
  --color-shadows-of-time-50: #d8fff5;
  --color-shadows-of-time-100: #c6f3e8;
  --color-shadows-of-time-200: #a7e3d4;
  --color-shadows-of-time-300: #7dc8b7;
  --color-shadows-of-time-400: #56b29c;
  --color-shadows-of-time-500: #1e9b83;
  --color-shadows-of-time-600: #1e836f;
  --color-shadows-of-time-700: #196959;
  --color-shadows-of-time-800: #114d40;
  --color-shadows-of-time-900: #0b362c;
  --color-shadows-of-time-950: #002119;
}

SCSS

$shadows-of-time: #138570;
$shadows-of-time-rgb: 19, 133, 112;
$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);
}