#7857CA

CSS

:root {
  --simply-purple: #7857ca;
  --simply-purple-rgb: 120 87 202;
  --simply-purple-oklch: oklch(0.549 0.171 293.2);
}

.element {
  color: var(--simply-purple);
  background-color: hsl(257 52% 57%);
  border-color: oklch(0.549 0.171 293.2);
}

Tailwind CSS v4

@theme {
  --color-simply-purple: #7857ca;
  --color-simply-purple-50: #f8ecff;
  --color-simply-purple-100: #ecddff;
  --color-simply-purple-200: #d9c6ff;
  --color-simply-purple-300: #bea5ff;
  --color-simply-purple-400: #a488f9;
  --color-simply-purple-500: #8e69eb;
  --color-simply-purple-600: #7859c6;
  --color-simply-purple-700: #60479f;
  --color-simply-purple-800: #443478;
  --color-simply-purple-900: #2f2455;
  --color-simply-purple-950: #1c1239;
}

SCSS

$simply-purple: #7857ca;
$simply-purple-rgb: 120, 87, 202;
$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);
}