#248566

CSS

:root {
  --shadows-of-time: #248566;
  --shadows-of-time-rgb: 36 133 102;
  --shadows-of-time-oklch: oklch(0.553 0.101 167.1);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(161 57% 33%);
  border-color: oklch(0.553 0.101 167.1);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #248566;
  --color-shadows-of-time-50: #dafff0;
  --color-shadows-of-time-100: #c8f3e2;
  --color-shadows-of-time-200: #aae3cd;
  --color-shadows-of-time-300: #82c8af;
  --color-shadows-of-time-400: #5db292;
  --color-shadows-of-time-500: #2f9b78;
  --color-shadows-of-time-600: #2a8366;
  --color-shadows-of-time-700: #226951;
  --color-shadows-of-time-800: #184d3a;
  --color-shadows-of-time-900: #103627;
  --color-shadows-of-time-950: #022116;
}

SCSS

$shadows-of-time: #248566;
$shadows-of-time-rgb: 36, 133, 102;
$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);
}