#8F9F8F

CSS

:root {
  --mother-earth: #8f9f8f;
  --mother-earth-rgb: 143 159 143;
  --mother-earth-oklch: oklch(0.685 0.029 145.2);
}

.element {
  color: var(--mother-earth);
  background-color: hsl(120 8% 59%);
  border-color: oklch(0.685 0.029 145.2);
}

Tailwind CSS v4

@theme {
  --color-mother-earth: #8f9f8f;
  --color-mother-earth-50: #f0f8f0;
  --color-mother-earth-100: #e2ebe2;
  --color-mother-earth-200: #ccd8cd;
  --color-mother-earth-300: #aebcaf;
  --color-mother-earth-400: #94a394;
  --color-mother-earth-500: #7a8c7a;
  --color-mother-earth-600: #687668;
  --color-mother-earth-700: #535f53;
  --color-mother-earth-800: #3d453c;
  --color-mother-earth-900: #2a3029;
  --color-mother-earth-950: #171c17;
}

SCSS

$mother-earth: #8f9f8f;
$mother-earth-rgb: 143, 159, 143;
$mother-earth-light: mix(#fff, $mother-earth, 20%);
$mother-earth-dark: mix(#000, $mother-earth, 20%);

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