#BFCADE

CSS

:root {
  --misty-mountains: #bfcade;
  --misty-mountains-rgb: 191 202 222;
  --misty-mountains-oklch: oklch(0.837 0.03 262.5);
}

.element {
  color: var(--misty-mountains);
  background-color: hsl(219 32% 81%);
  border-color: oklch(0.837 0.03 262.5);
}

Tailwind CSS v4

@theme {
  --color-misty-mountains: #bfcade;
  --color-misty-mountains-50: #f1f5fe;
  --color-misty-mountains-100: #e3e8f2;
  --color-misty-mountains-200: #ced4e2;
  --color-misty-mountains-300: #b0b8c8;
  --color-misty-mountains-400: #959fb1;
  --color-misty-mountains-500: #7b879b;
  --color-misty-mountains-600: #697283;
  --color-misty-mountains-700: #545b69;
  --color-misty-mountains-800: #3c434d;
  --color-misty-mountains-900: #292e36;
  --color-misty-mountains-950: #171b21;
}

SCSS

$misty-mountains: #bfcade;
$misty-mountains-rgb: 191, 202, 222;
$misty-mountains-light: mix(#fff, $misty-mountains, 20%);
$misty-mountains-dark: mix(#000, $misty-mountains, 20%);

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