Night Turquoise

CSS

:root {
  --night-turquoise: #003833;
  --night-turquoise-rgb: 0 56 51;
  --night-turquoise-oklch: oklch(0.306 0.054 185.2);
}

.element {
  color: var(--night-turquoise);
  background-color: hsl(175 100% 11%);
  border-color: oklch(0.306 0.054 185.2);
}

Tailwind CSS v4

@theme {
  --color-night-turquoise: #003833;
  --color-night-turquoise-50: #e5fbf8;
  --color-night-turquoise-100: #d5eeeb;
  --color-night-turquoise-200: #bbdcd8;
  --color-night-turquoise-300: #99c1bc;
  --color-night-turquoise-400: #7aa9a3;
  --color-night-turquoise-500: #5b928b;
  --color-night-turquoise-600: #4e7c75;
  --color-night-turquoise-700: #3e635e;
  --color-night-turquoise-800: #2c4944;
  --color-night-turquoise-900: #1e322f;
  --color-night-turquoise-950: #0e1e1c;
}

SCSS

$night-turquoise: #003833;
$night-turquoise-rgb: 0, 56, 51;
$night-turquoise-light: mix(#fff, $night-turquoise, 20%);
$night-turquoise-dark: mix(#000, $night-turquoise, 20%);

.element {
  color: $night-turquoise;
  box-shadow: 0 0 0 2px rgba($night-turquoise, 0.35);
}