#62731D

CSS

:root {
  --muddy-green: #62731d;
  --muddy-green-rgb: 98 115 29;
  --muddy-green-oklch: oklch(0.524 0.111 120.2);
}

.element {
  color: var(--muddy-green);
  background-color: hsl(72 60% 28%);
  border-color: oklch(0.524 0.111 120.2);
}

Tailwind CSS v4

@theme {
  --color-muddy-green: #62731d;
  --color-muddy-green-50: #effbd8;
  --color-muddy-green-100: #e1eec6;
  --color-muddy-green-200: #ccdca8;
  --color-muddy-green-300: #adc181;
  --color-muddy-green-400: #96a85b;
  --color-muddy-green-500: #7d9132;
  --color-muddy-green-600: #6a7a2c;
  --color-muddy-green-700: #546223;
  --color-muddy-green-800: #3f4716;
  --color-muddy-green-900: #2b310e;
  --color-muddy-green-950: #191d02;
}

SCSS

$muddy-green: #62731d;
$muddy-green-rgb: 98, 115, 29;
$muddy-green-light: mix(#fff, $muddy-green, 20%);
$muddy-green-dark: mix(#000, $muddy-green, 20%);

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