#D8E4E1

CSS

:root {
  --homoeopathic-blue: #d8e4e1;
  --homoeopathic-blue-rgb: 216 228 225;
  --homoeopathic-blue-oklch: oklch(0.909 0.013 179.4);
}

.element {
  color: var(--homoeopathic-blue);
  background-color: hsl(165 18% 87%);
  border-color: oklch(0.909 0.013 179.4);
}

Tailwind CSS v4

@theme {
  --color-homoeopathic-blue: #d8e4e1;
  --color-homoeopathic-blue-50: #f1f6f5;
  --color-homoeopathic-blue-100: #e3e9e8;
  --color-homoeopathic-blue-200: #ced6d4;
  --color-homoeopathic-blue-300: #b0bab8;
  --color-homoeopathic-blue-400: #96a19e;
  --color-homoeopathic-blue-500: #7d8986;
  --color-homoeopathic-blue-600: #6a7472;
  --color-homoeopathic-blue-700: #555d5b;
  --color-homoeopathic-blue-800: #3e4442;
  --color-homoeopathic-blue-900: #2a2f2e;
  --color-homoeopathic-blue-950: #181b1a;
}

SCSS

$homoeopathic-blue: #d8e4e1;
$homoeopathic-blue-rgb: 216, 228, 225;
$homoeopathic-blue-light: mix(#fff, $homoeopathic-blue, 20%);
$homoeopathic-blue-dark: mix(#000, $homoeopathic-blue, 20%);

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