#775BBB

CSS

:root {
  --simply-purple: #775bbb;
  --simply-purple-rgb: 119 91 187;
  --simply-purple-oklch: oklch(0.545 0.146 294.5);
}

.element {
  color: var(--simply-purple);
  background-color: hsl(258 41% 55%);
  border-color: oklch(0.545 0.146 294.5);
}

Tailwind CSS v4

@theme {
  --color-simply-purple: #775bbb;
  --color-simply-purple-50: #f9edff;
  --color-simply-purple-100: #ecdfff;
  --color-simply-purple-200: #dac8ff;
  --color-simply-purple-300: #bfa8f9;
  --color-simply-purple-400: #a48ceb;
  --color-simply-purple-500: #8e6fdb;
  --color-simply-purple-600: #785eb9;
  --color-simply-purple-700: #604b95;
  --color-simply-purple-800: #453770;
  --color-simply-purple-900: #2f264f;
  --color-simply-purple-950: #1c1434;
}

SCSS

$simply-purple: #775bbb;
$simply-purple-rgb: 119, 91, 187;
$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);
}