#9A9E6C

CSS

:root {
  --guacamole: #9a9e6c;
  --guacamole-rgb: 154 158 108;
  --guacamole-oklch: oklch(0.683 0.069 111.9);
}

.element {
  color: var(--guacamole);
  background-color: hsl(65 20% 52%);
  border-color: oklch(0.683 0.069 111.9);
}

Tailwind CSS v4

@theme {
  --color-guacamole: #9a9e6c;
  --color-guacamole-50: #f4f8e2;
  --color-guacamole-100: #e7ebd1;
  --color-guacamole-200: #d3d8b7;
  --color-guacamole-300: #b6bc94;
  --color-guacamole-400: #9fa373;
  --color-guacamole-500: #878b54;
  --color-guacamole-600: #727648;
  --color-guacamole-700: #5b5e39;
  --color-guacamole-800: #444528;
  --color-guacamole-900: #2f2f1b;
  --color-guacamole-950: #1b1c0b;
}

SCSS

$guacamole: #9a9e6c;
$guacamole-rgb: 154, 158, 108;
$guacamole-light: mix(#fff, $guacamole, 20%);
$guacamole-dark: mix(#000, $guacamole, 20%);

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