#13866E

CSS

:root {
  --shadows-of-time: #13866e;
  --shadows-of-time-rgb: 19 134 110;
  --shadows-of-time-oklch: oklch(0.555 0.102 173.6);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(167 75% 30%);
  border-color: oklch(0.555 0.102 173.6);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #13866e;
  --color-shadows-of-time-50: #d8fff4;
  --color-shadows-of-time-100: #c5f4e6;
  --color-shadows-of-time-200: #a6e3d2;
  --color-shadows-of-time-300: #7dc9b5;
  --color-shadows-of-time-400: #55b299;
  --color-shadows-of-time-500: #1d9c80;
  --color-shadows-of-time-600: #1d846d;
  --color-shadows-of-time-700: #186957;
  --color-shadows-of-time-800: #114e3e;
  --color-shadows-of-time-900: #0b362b;
  --color-shadows-of-time-950: #002118;
}

SCSS

$shadows-of-time: #13866e;
$shadows-of-time-rgb: 19, 134, 110;
$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);
}