#6C5DC6

CSS

:root {
  --simply-purple: #6c5dc6;
  --simply-purple-rgb: 108 93 198;
  --simply-purple-oklch: oklch(0.546 0.157 286.5);
}

.element {
  color: var(--simply-purple);
  background-color: hsl(249 48% 57%);
  border-color: oklch(0.546 0.157 286.5);
}

Tailwind CSS v4

@theme {
  --color-simply-purple: #6c5dc6;
  --color-simply-purple-50: #f2efff;
  --color-simply-purple-100: #e5e0ff;
  --color-simply-purple-200: #d1caff;
  --color-simply-purple-300: #b4aaff;
  --color-simply-purple-400: #988ef6;
  --color-simply-purple-500: #8171e8;
  --color-simply-purple-600: #6d60c3;
  --color-simply-purple-700: #574d9d;
  --color-simply-purple-800: #3e3876;
  --color-simply-purple-900: #2a2653;
  --color-simply-purple-950: #181438;
}

SCSS

$simply-purple: #6c5dc6;
$simply-purple-rgb: 108, 93, 198;
$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);
}