#989F6F

CSS

:root {
  --guacamole: #989f6f;
  --guacamole-rgb: 152 159 111;
  --guacamole-oklch: oklch(0.685 0.067 114.9);
}

.element {
  color: var(--guacamole);
  background-color: hsl(69 20% 53%);
  border-color: oklch(0.685 0.067 114.9);
}

Tailwind CSS v4

@theme {
  --color-guacamole: #989f6f;
  --color-guacamole-50: #f3f8e3;
  --color-guacamole-100: #e6ebd2;
  --color-guacamole-200: #d2d8b8;
  --color-guacamole-300: #b5bc96;
  --color-guacamole-400: #9da476;
  --color-guacamole-500: #848c57;
  --color-guacamole-600: #70764a;
  --color-guacamole-700: #5a5f3b;
  --color-guacamole-800: #424529;
  --color-guacamole-900: #2e301c;
  --color-guacamole-950: #1b1c0c;
}

SCSS

$guacamole: #989f6f;
$guacamole-rgb: 152, 159, 111;
$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);
}