#D4E2D5

CSS

:root {
  --misty-marsh: #d4e2d5;
  --misty-marsh-rgb: 212 226 213;
  --misty-marsh-oklch: oklch(0.899 0.023 147.4);
}

.element {
  color: var(--misty-marsh);
  background-color: hsl(124 19% 86%);
  border-color: oklch(0.899 0.023 147.4);
}

Tailwind CSS v4

@theme {
  --color-misty-marsh: #d4e2d5;
  --color-misty-marsh-50: #f1f7f2;
  --color-misty-marsh-100: #e3eae4;
  --color-misty-marsh-200: #ced7cf;
  --color-misty-marsh-300: #b0bbb1;
  --color-misty-marsh-400: #96a297;
  --color-misty-marsh-500: #7c8b7e;
  --color-misty-marsh-600: #69756a;
  --color-misty-marsh-700: #545e55;
  --color-misty-marsh-800: #3e453e;
  --color-misty-marsh-900: #2a2f2a;
  --color-misty-marsh-950: #181c18;
}

SCSS

$misty-marsh: #d4e2d5;
$misty-marsh-rgb: 212, 226, 213;
$misty-marsh-light: mix(#fff, $misty-marsh, 20%);
$misty-marsh-dark: mix(#000, $misty-marsh, 20%);

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