#7657CC

CSS

:root {
  --simply-purple: #7657cc;
  --simply-purple-rgb: 118 87 204;
  --simply-purple-oklch: oklch(0.548 0.174 291.9);
}

.element {
  color: var(--simply-purple);
  background-color: hsl(256 53% 57%);
  border-color: oklch(0.548 0.174 291.9);
}

Tailwind CSS v4

@theme {
  --color-simply-purple: #7657cc;
  --color-simply-purple-50: #f7ecff;
  --color-simply-purple-100: #eaddff;
  --color-simply-purple-200: #d8c6ff;
  --color-simply-purple-300: #bca5ff;
  --color-simply-purple-400: #a288fb;
  --color-simply-purple-500: #8c69ed;
  --color-simply-purple-600: #765ac8;
  --color-simply-purple-700: #5e48a1;
  --color-simply-purple-800: #433479;
  --color-simply-purple-900: #2e2456;
  --color-simply-purple-950: #1b123a;
}

SCSS

$simply-purple: #7657cc;
$simply-purple-rgb: 118, 87, 204;
$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);
}