#6D60B6

CSS

:root {
  --simply-purple: #6d60b6;
  --simply-purple-rgb: 109 96 182;
  --simply-purple-oklch: oklch(0.542 0.131 288.2);
}

.element {
  color: var(--simply-purple);
  background-color: hsl(249 37% 55%);
  border-color: oklch(0.542 0.131 288.2);
}

Tailwind CSS v4

@theme {
  --color-simply-purple: #6d60b6;
  --color-simply-purple-50: #f4f0ff;
  --color-simply-purple-100: #e7e1ff;
  --color-simply-purple-200: #d3cbff;
  --color-simply-purple-300: #b6acf6;
  --color-simply-purple-400: #9b91e7;
  --color-simply-purple-500: #8475d7;
  --color-simply-purple-600: #6f64b5;
  --color-simply-purple-700: #595092;
  --color-simply-purple-800: #3f3a6d;
  --color-simply-purple-900: #2c284d;
  --color-simply-purple-950: #191633;
}

SCSS

$simply-purple: #6d60b6;
$simply-purple-rgb: 109, 96, 182;
$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);
}