Black Evergreen

CSS

:root {
  --black-evergreen: #45524f;
  --black-evergreen-rgb: 69 82 79;
  --black-evergreen-oklch: oklch(0.426 0.017 180);
}

.element {
  color: var(--black-evergreen);
  background-color: hsl(166 9% 30%);
  border-color: oklch(0.426 0.017 180);
}

Tailwind CSS v4

@theme {
  --color-black-evergreen: #45524f;
  --color-black-evergreen-50: #f0f7f5;
  --color-black-evergreen-100: #e2eae8;
  --color-black-evergreen-200: #cdd7d5;
  --color-black-evergreen-300: #aebab8;
  --color-black-evergreen-400: #94a29f;
  --color-black-evergreen-500: #7b8a86;
  --color-black-evergreen-600: #687572;
  --color-black-evergreen-700: #535d5b;
  --color-black-evergreen-800: #3c4442;
  --color-black-evergreen-900: #292f2e;
  --color-black-evergreen-950: #171c1b;
}

SCSS

$black-evergreen: #45524f;
$black-evergreen-rgb: 69, 82, 79;
$black-evergreen-light: mix(#fff, $black-evergreen, 20%);
$black-evergreen-dark: mix(#000, $black-evergreen, 20%);

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