#37226E

CSS

:root {
  --dark-dreams: #37226e;
  --dark-dreams-rgb: 55 34 110;
  --dark-dreams-oklch: oklch(0.327 0.125 290.5);
}

.element {
  color: var(--dark-dreams);
  background-color: hsl(257 53% 28%);
  border-color: oklch(0.327 0.125 290.5);
}

Tailwind CSS v4

@theme {
  --color-dark-dreams: #37226e;
  --color-dark-dreams-50: #f5efff;
  --color-dark-dreams-100: #e8e1ff;
  --color-dark-dreams-200: #d5cbff;
  --color-dark-dreams-300: #b9acf2;
  --color-dark-dreams-400: #9e91e3;
  --color-dark-dreams-500: #8775d2;
  --color-dark-dreams-600: #7264b1;
  --color-dark-dreams-700: #5b508e;
  --color-dark-dreams-800: #413a6b;
  --color-dark-dreams-900: #2d284b;
  --color-dark-dreams-950: #1a1631;
}

SCSS

$dark-dreams: #37226e;
$dark-dreams-rgb: 55, 34, 110;
$dark-dreams-light: mix(#fff, $dark-dreams, 20%);
$dark-dreams-dark: mix(#000, $dark-dreams, 20%);

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