#5D7430

CSS

:root {
  --muddy-green: #5d7430;
  --muddy-green-rgb: 93 116 48;
  --muddy-green-oklch: oklch(0.525 0.098 125.3);
}

.element {
  color: var(--muddy-green);
  background-color: hsl(80 41% 32%);
  border-color: oklch(0.525 0.098 125.3);
}

Tailwind CSS v4

@theme {
  --color-muddy-green: #5d7430;
  --color-muddy-green-50: #edfbdd;
  --color-muddy-green-100: #dfefcc;
  --color-muddy-green-200: #c9ddb0;
  --color-muddy-green-300: #aac18b;
  --color-muddy-green-400: #91a968;
  --color-muddy-green-500: #779145;
  --color-muddy-green-600: #657b3b;
  --color-muddy-green-700: #50632f;
  --color-muddy-green-800: #3c481f;
  --color-muddy-green-900: #293215;
  --color-muddy-green-950: #171e06;
}

SCSS

$muddy-green: #5d7430;
$muddy-green-rgb: 93, 116, 48;
$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);
}