#91A253

CSS

:root {
  --springtide-melodies: #91a253;
  --springtide-melodies-rgb: 145 162 83;
  --springtide-melodies-oklch: oklch(0.681 0.106 119.3);
}

.element {
  color: var(--springtide-melodies);
  background-color: hsl(73 32% 48%);
  border-color: oklch(0.681 0.106 119.3);
}

Tailwind CSS v4

@theme {
  --color-springtide-melodies: #91a253;
  --color-springtide-melodies-50: #f0fad9;
  --color-springtide-melodies-100: #e2eec7;
  --color-springtide-melodies-200: #cddca9;
  --color-springtide-melodies-300: #afc083;
  --color-springtide-melodies-400: #97a85d;
  --color-springtide-melodies-500: #7e9036;
  --color-springtide-melodies-600: #6b7a2f;
  --color-springtide-melodies-700: #556125;
  --color-springtide-melodies-800: #404718;
  --color-springtide-melodies-900: #2c310f;
  --color-springtide-melodies-950: #191d03;
}

SCSS

$springtide-melodies: #91a253;
$springtide-melodies-rgb: 145, 162, 83;
$springtide-melodies-light: mix(#fff, $springtide-melodies, 20%);
$springtide-melodies-dark: mix(#000, $springtide-melodies, 20%);

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