#909F90

CSS

:root {
  --mother-earth: #909f90;
  --mother-earth-rgb: 144 159 144;
  --mother-earth-oklch: oklch(0.686 0.028 145.3);
}

.element {
  color: var(--mother-earth);
  background-color: hsl(120 7% 59%);
  border-color: oklch(0.686 0.028 145.3);
}

Tailwind CSS v4

@theme {
  --color-mother-earth: #909f90;
  --color-mother-earth-50: #f0f7f1;
  --color-mother-earth-100: #e2eae3;
  --color-mother-earth-200: #cdd8ce;
  --color-mother-earth-300: #afbbaf;
  --color-mother-earth-400: #95a395;
  --color-mother-earth-500: #7b8b7b;
  --color-mother-earth-600: #687668;
  --color-mother-earth-700: #535e53;
  --color-mother-earth-800: #3d453c;
  --color-mother-earth-900: #2a3029;
  --color-mother-earth-950: #171c17;
}

SCSS

$mother-earth: #909f90;
$mother-earth-rgb: 144, 159, 144;
$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);
}