#B6DDC3

CSS

:root {
  --mother-nature: #b6ddc3;
  --mother-nature-rgb: 182 221 195;
  --mother-nature-oklch: oklch(0.862 0.054 155.9);
}

.element {
  color: var(--mother-nature);
  background-color: hsl(140 36% 79%);
  border-color: oklch(0.862 0.054 155.9);
}

Tailwind CSS v4

@theme {
  --color-mother-nature: #b6ddc3;
  --color-mother-nature-50: #e9faef;
  --color-mother-nature-100: #daeee1;
  --color-mother-nature-200: #c2dccb;
  --color-mother-nature-300: #a1c0ad;
  --color-mother-nature-400: #85a891;
  --color-mother-nature-500: #699177;
  --color-mother-nature-600: #597b65;
  --color-mother-nature-700: #476251;
  --color-mother-nature-800: #34483a;
  --color-mother-nature-900: #233228;
  --color-mother-nature-950: #121e16;
}

SCSS

$mother-nature: #b6ddc3;
$mother-nature-rgb: 182, 221, 195;
$mother-nature-light: mix(#fff, $mother-nature, 20%);
$mother-nature-dark: mix(#000, $mother-nature, 20%);

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