#178570

CSS

:root {
  --shadows-of-time: #178570;
  --shadows-of-time-rgb: 23 133 112;
  --shadows-of-time-oklch: oklch(0.554 0.098 175.7);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(169 71% 31%);
  border-color: oklch(0.554 0.098 175.7);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #178570;
  --color-shadows-of-time-50: #d9fff5;
  --color-shadows-of-time-100: #c6f3e8;
  --color-shadows-of-time-200: #a7e3d4;
  --color-shadows-of-time-300: #7ec8b7;
  --color-shadows-of-time-400: #57b29c;
  --color-shadows-of-time-500: #229b83;
  --color-shadows-of-time-600: #21836f;
  --color-shadows-of-time-700: #1b6959;
  --color-shadows-of-time-800: #124d3f;
  --color-shadows-of-time-900: #0c362c;
  --color-shadows-of-time-950: #002119;
}

SCSS

$shadows-of-time: #178570;
$shadows-of-time-rgb: 23, 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);
}