#486E3C

CSS

:root {
  --under-the-radar: #486e3c;
  --under-the-radar-rgb: 72 110 60;
  --under-the-radar-oklch: oklch(0.496 0.087 138.5);
}

.element {
  color: var(--under-the-radar);
  background-color: hsl(106 29% 33%);
  border-color: oklch(0.496 0.087 138.5);
}

Tailwind CSS v4

@theme {
  --color-under-the-radar: #486e3c;
  --color-under-the-radar-50: #e8fce4;
  --color-under-the-radar-100: #d9f0d4;
  --color-under-the-radar-200: #c1debb;
  --color-under-the-radar-300: #a0c399;
  --color-under-the-radar-400: #85ab79;
  --color-under-the-radar-500: #68945b;
  --color-under-the-radar-600: #597d4d;
  --color-under-the-radar-700: #47643d;
  --color-under-the-radar-800: #34492b;
  --color-under-the-radar-900: #23331d;
  --color-under-the-radar-950: #121f0d;
}

SCSS

$under-the-radar: #486e3c;
$under-the-radar-rgb: 72, 110, 60;
$under-the-radar-light: mix(#fff, $under-the-radar, 20%);
$under-the-radar-dark: mix(#000, $under-the-radar, 20%);

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