#8FA07B

CSS

:root {
  --backyard: #8fa07b;
  --backyard-rgb: 143 160 123;
  --backyard-oklch: oklch(0.682 0.056 127.9);
}

.element {
  color: var(--backyard);
  background-color: hsl(88 16% 55%);
  border-color: oklch(0.682 0.056 127.9);
}

Tailwind CSS v4

@theme {
  --color-backyard: #8fa07b;
  --color-backyard-50: #f0f9e8;
  --color-backyard-100: #e2ecd9;
  --color-backyard-200: #ccd9c1;
  --color-backyard-300: #aebea0;
  --color-backyard-400: #95a582;
  --color-backyard-500: #7b8e66;
  --color-backyard-600: #697856;
  --color-backyard-700: #546045;
  --color-backyard-800: #3d4631;
  --color-backyard-900: #2a3021;
  --color-backyard-950: #181d10;
}

SCSS

$backyard: #8fa07b;
$backyard-rgb: 143, 160, 123;
$backyard-light: mix(#fff, $backyard, 20%);
$backyard-dark: mix(#000, $backyard, 20%);

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