#89A090

CSS

:root {
  --mother-earth: #89a090;
  --mother-earth-rgb: 137 160 144;
  --mother-earth-oklch: oklch(0.683 0.035 155);
}

.element {
  color: var(--mother-earth);
  background-color: hsl(138 11% 58%);
  border-color: oklch(0.683 0.035 155);
}

Tailwind CSS v4

@theme {
  --color-mother-earth: #89a090;
  --color-mother-earth-50: #eef8f1;
  --color-mother-earth-100: #dfece3;
  --color-mother-earth-200: #c9d9ce;
  --color-mother-earth-300: #aabdb0;
  --color-mother-earth-400: #8fa596;
  --color-mother-earth-500: #748d7c;
  --color-mother-earth-600: #637869;
  --color-mother-earth-700: #4f6054;
  --color-mother-earth-800: #39463d;
  --color-mother-earth-900: #27302a;
  --color-mother-earth-950: #151d17;
}

SCSS

$mother-earth: #89a090;
$mother-earth-rgb: 137, 160, 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);
}