#1F836A

CSS

:root {
  --shadows-of-time: #1f836a;
  --shadows-of-time-rgb: 31 131 106;
  --shadows-of-time-oklch: oklch(0.548 0.097 171.7);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(165 62% 32%);
  border-color: oklch(0.548 0.097 171.7);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #1f836a;
  --color-shadows-of-time-50: #dafff3;
  --color-shadows-of-time-100: #c8f3e5;
  --color-shadows-of-time-200: #a9e2d1;
  --color-shadows-of-time-300: #81c8b3;
  --color-shadows-of-time-400: #5cb197;
  --color-shadows-of-time-500: #2c9b7e;
  --color-shadows-of-time-600: #28836b;
  --color-shadows-of-time-700: #206955;
  --color-shadows-of-time-800: #174d3d;
  --color-shadows-of-time-900: #0f362a;
  --color-shadows-of-time-950: #022117;
}

SCSS

$shadows-of-time: #1f836a;
$shadows-of-time-rgb: 31, 131, 106;
$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);
}