#8AA091

CSS

:root {
  --mother-earth: #8aa091;
  --mother-earth-rgb: 138 160 145;
  --mother-earth-oklch: oklch(0.684 0.033 155.6);
}

.element {
  color: var(--mother-earth);
  background-color: hsl(139 10% 58%);
  border-color: oklch(0.684 0.033 155.6);
}

Tailwind CSS v4

@theme {
  --color-mother-earth: #8aa091;
  --color-mother-earth-50: #eef8f1;
  --color-mother-earth-100: #dfebe4;
  --color-mother-earth-200: #c9d9cf;
  --color-mother-earth-300: #aabdb1;
  --color-mother-earth-400: #90a596;
  --color-mother-earth-500: #758d7d;
  --color-mother-earth-600: #63776a;
  --color-mother-earth-700: #4f5f55;
  --color-mother-earth-800: #3a463d;
  --color-mother-earth-900: #28302a;
  --color-mother-earth-950: #161d18;
}

SCSS

$mother-earth: #8aa091;
$mother-earth-rgb: 138, 160, 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);
}