#DCE8E3

CSS

:root {
  --homoeopathic-blue: #dce8e3;
  --homoeopathic-blue-rgb: 220 232 227;
  --homoeopathic-blue-oklch: oklch(0.921 0.014 169.2);
}

.element {
  color: var(--homoeopathic-blue);
  background-color: hsl(155 21% 89%);
  border-color: oklch(0.921 0.014 169.2);
}

Tailwind CSS v4

@theme {
  --color-homoeopathic-blue: #dce8e3;
  --color-homoeopathic-blue-50: #f1f6f4;
  --color-homoeopathic-blue-100: #e3e9e7;
  --color-homoeopathic-blue-200: #ced6d3;
  --color-homoeopathic-blue-300: #b0bab6;
  --color-homoeopathic-blue-400: #97a19d;
  --color-homoeopathic-blue-500: #7d8984;
  --color-homoeopathic-blue-600: #6a7470;
  --color-homoeopathic-blue-700: #555d5a;
  --color-homoeopathic-blue-800: #3e4441;
  --color-homoeopathic-blue-900: #2b2f2d;
  --color-homoeopathic-blue-950: #181c1a;
}

SCSS

$homoeopathic-blue: #dce8e3;
$homoeopathic-blue-rgb: 220, 232, 227;
$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);
}