#7C9CCF

CSS

:root {
  --wisteria-blue: #7c9ccf;
  --wisteria-blue-rgb: 124 156 207;
  --wisteria-blue-oklch: oklch(0.688 0.084 259.5);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(217 46% 65%);
  border-color: oklch(0.688 0.084 259.5);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7c9ccf;
  --color-wisteria-blue-50: #e8f6ff;
  --color-wisteria-blue-100: #d9e9ff;
  --color-wisteria-blue-200: #c1d5f9;
  --color-wisteria-blue-300: #a0b8e3;
  --color-wisteria-blue-400: #81a0d0;
  --color-wisteria-blue-500: #6587be;
  --color-wisteria-blue-600: #5672a0;
  --color-wisteria-blue-700: #445b81;
  --color-wisteria-blue-800: #30435f;
  --color-wisteria-blue-900: #202e43;
  --color-wisteria-blue-950: #101b2b;
}

SCSS

$wisteria-blue: #7c9ccf;
$wisteria-blue-rgb: 124, 156, 207;
$wisteria-blue-light: mix(#fff, $wisteria-blue, 20%);
$wisteria-blue-dark: mix(#000, $wisteria-blue, 20%);

.element {
  color: $wisteria-blue;
  box-shadow: 0 0 0 2px rgba($wisteria-blue, 0.35);
}