#7F55C5

CSS

:root {
  --simply-purple: #7f55c5;
  --simply-purple-rgb: 127 85 197;
  --simply-purple-oklch: oklch(0.549 0.168 297.9);
}

.element {
  color: var(--simply-purple);
  background-color: hsl(263 49% 55%);
  border-color: oklch(0.549 0.168 297.9);
}

Tailwind CSS v4

@theme {
  --color-simply-purple: #7f55c5;
  --color-simply-purple-50: #fcebff;
  --color-simply-purple-100: #f0dcff;
  --color-simply-purple-200: #dfc4ff;
  --color-simply-purple-300: #c5a3ff;
  --color-simply-purple-400: #ab86f4;
  --color-simply-purple-500: #9666e5;
  --color-simply-purple-600: #7e57c1;
  --color-simply-purple-700: #65469b;
  --color-simply-purple-800: #493375;
  --color-simply-purple-900: #322353;
  --color-simply-purple-950: #1e1137;
}

SCSS

$simply-purple: #7f55c5;
$simply-purple-rgb: 127, 85, 197;
$simply-purple-light: mix(#fff, $simply-purple, 20%);
$simply-purple-dark: mix(#000, $simply-purple, 20%);

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