#36836D

CSS

:root {
  --shadows-of-time: #36836d;
  --shadows-of-time-rgb: 54 131 109;
  --shadows-of-time-oklch: oklch(0.555 0.084 171.6);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(163 42% 36%);
  border-color: oklch(0.555 0.084 171.6);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #36836d;
  --color-shadows-of-time-50: #defef3;
  --color-shadows-of-time-100: #ccf2e5;
  --color-shadows-of-time-200: #b0e1d1;
  --color-shadows-of-time-300: #8ac6b4;
  --color-shadows-of-time-400: #68af98;
  --color-shadows-of-time-500: #42987f;
  --color-shadows-of-time-600: #39816c;
  --color-shadows-of-time-700: #2d6756;
  --color-shadows-of-time-800: #204c3e;
  --color-shadows-of-time-900: #15352a;
  --color-shadows-of-time-950: #062018;
}

SCSS

$shadows-of-time: #36836d;
$shadows-of-time-rgb: 54, 131, 109;
$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);
}