#8C9F91

CSS

:root {
  --mother-earth: #8c9f91;
  --mother-earth-rgb: 140 159 145;
  --mother-earth-oklch: oklch(0.683 0.03 153.6);
}

.element {
  color: var(--mother-earth);
  background-color: hsl(136 9% 59%);
  border-color: oklch(0.683 0.03 153.6);
}

Tailwind CSS v4

@theme {
  --color-mother-earth: #8c9f91;
  --color-mother-earth-50: #eff8f2;
  --color-mother-earth-100: #e1ebe4;
  --color-mother-earth-200: #cbd8cf;
  --color-mother-earth-300: #acbcb1;
  --color-mother-earth-400: #92a496;
  --color-mother-earth-500: #788c7d;
  --color-mother-earth-600: #65776a;
  --color-mother-earth-700: #515f55;
  --color-mother-earth-800: #3b453d;
  --color-mother-earth-900: #29302a;
  --color-mother-earth-950: #161c18;
}

SCSS

$mother-earth: #8c9f91;
$mother-earth-rgb: 140, 159, 145;
$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);
}