#238570

CSS

:root {
  --shadows-of-time: #238570;
  --shadows-of-time-rgb: 35 133 112;
  --shadows-of-time-oklch: oklch(0.556 0.094 174.9);
}

.element {
  color: var(--shadows-of-time);
  background-color: hsl(167 58% 33%);
  border-color: oklch(0.556 0.094 174.9);
}

Tailwind CSS v4

@theme {
  --color-shadows-of-time: #238570;
  --color-shadows-of-time-50: #dafff4;
  --color-shadows-of-time-100: #c8f3e7;
  --color-shadows-of-time-200: #aae2d3;
  --color-shadows-of-time-300: #81c8b6;
  --color-shadows-of-time-400: #5cb19b;
  --color-shadows-of-time-500: #2d9a82;
  --color-shadows-of-time-600: #29826e;
  --color-shadows-of-time-700: #216858;
  --color-shadows-of-time-800: #174d3f;
  --color-shadows-of-time-900: #0f352b;
  --color-shadows-of-time-950: #022019;
}

SCSS

$shadows-of-time: #238570;
$shadows-of-time-rgb: 35, 133, 112;
$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);
}