#48467A

CSS

:root {
  --tangent-periwinkle: #48467a;
  --tangent-periwinkle-rgb: 72 70 122;
  --tangent-periwinkle-oklch: oklch(0.421 0.085 283.9);
}

.element {
  color: var(--tangent-periwinkle);
  background-color: hsl(242 27% 38%);
  border-color: oklch(0.421 0.085 283.9);
}

Tailwind CSS v4

@theme {
  --color-tangent-periwinkle: #48467a;
  --color-tangent-periwinkle-50: #f2f2ff;
  --color-tangent-periwinkle-100: #e5e4ff;
  --color-tangent-periwinkle-200: #d0d0f8;
  --color-tangent-periwinkle-300: #b3b2e2;
  --color-tangent-periwinkle-400: #9898d0;
  --color-tangent-periwinkle-500: #7f7ebd;
  --color-tangent-periwinkle-600: #6c6b9f;
  --color-tangent-periwinkle-700: #565680;
  --color-tangent-periwinkle-800: #3d3f5f;
  --color-tangent-periwinkle-900: #2a2b43;
  --color-tangent-periwinkle-950: #18182b;
}

SCSS

$tangent-periwinkle: #48467a;
$tangent-periwinkle-rgb: 72, 70, 122;
$tangent-periwinkle-light: mix(#fff, $tangent-periwinkle, 20%);
$tangent-periwinkle-dark: mix(#000, $tangent-periwinkle, 20%);

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