#91A255

CSS

:root {
  --springtide-melodies: #91a255;
  --springtide-melodies-rgb: 145 162 85;
  --springtide-melodies-oklch: oklch(0.681 0.104 119.5);
}

.element {
  color: var(--springtide-melodies);
  background-color: hsl(73 31% 48%);
  border-color: oklch(0.681 0.104 119.5);
}

Tailwind CSS v4

@theme {
  --color-springtide-melodies: #91a255;
  --color-springtide-melodies-50: #f0fada;
  --color-springtide-melodies-100: #e2eec8;
  --color-springtide-melodies-200: #cddcaa;
  --color-springtide-melodies-300: #afc084;
  --color-springtide-melodies-400: #97a75f;
  --color-springtide-melodies-500: #7e9039;
  --color-springtide-melodies-600: #6b7a31;
  --color-springtide-melodies-700: #556127;
  --color-springtide-melodies-800: #404719;
  --color-springtide-melodies-900: #2c3110;
  --color-springtide-melodies-950: #191d03;
}

SCSS

$springtide-melodies: #91a255;
$springtide-melodies-rgb: 145, 162, 85;
$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);
}