#288361

CSS

:root {
  --shadows-of-time: #288361;
  --shadows-of-time-rgb: 40 131 97;
  --shadows-of-time-oklch: oklch(0.547 0.101 164.1);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(158 53% 34%);
  border-color: oklch(0.547 0.101 164.1);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #288361;
  --color-shadows-of-time-50: #dbffef;
  --color-shadows-of-time-100: #c9f3e0;
  --color-shadows-of-time-200: #ace3cb;
  --color-shadows-of-time-300: #84c8ac;
  --color-shadows-of-time-400: #61b18f;
  --color-shadows-of-time-500: #369b74;
  --color-shadows-of-time-600: #308363;
  --color-shadows-of-time-700: #26694f;
  --color-shadows-of-time-800: #1b4d38;
  --color-shadows-of-time-900: #123626;
  --color-shadows-of-time-950: #042114;
}

SCSS

$shadows-of-time: #288361;
$shadows-of-time-rgb: 40, 131, 97;
$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);
}