#7B55C4

CSS

:root {
  --simply-purple: #7b55c4;
  --simply-purple-rgb: 123 85 196;
  --simply-purple-oklch: oklch(0.545 0.167 296.2);
}

.element {
  color: var(--simply-purple);
  background-color: hsl(261 48% 55%);
  border-color: oklch(0.545 0.167 296.2);
}

Tailwind CSS v4

@theme {
  --color-simply-purple: #7b55c4;
  --color-simply-purple-50: #fbecff;
  --color-simply-purple-100: #eeddff;
  --color-simply-purple-200: #ddc5ff;
  --color-simply-purple-300: #c2a4ff;
  --color-simply-purple-400: #a887f4;
  --color-simply-purple-500: #9368e6;
  --color-simply-purple-600: #7c59c2;
  --color-simply-purple-700: #63479c;
  --color-simply-purple-800: #473475;
  --color-simply-purple-900: #312353;
  --color-simply-purple-950: #1d1237;
}

SCSS

$simply-purple: #7b55c4;
$simply-purple-rgb: 123, 85, 196;
$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);
}