#7C9DCB

CSS

:root {
  --wisteria-blue: #7c9dcb;
  --wisteria-blue-rgb: 124 157 203;
  --wisteria-blue-oklch: oklch(0.689 0.078 256.8);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(215 43% 64%);
  border-color: oklch(0.689 0.078 256.8);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7c9dcb;
  --color-wisteria-blue-50: #e8f6ff;
  --color-wisteria-blue-100: #d9e9ff;
  --color-wisteria-blue-200: #c1d6f6;
  --color-wisteria-blue-300: #a0b9e0;
  --color-wisteria-blue-400: #81a0cc;
  --color-wisteria-blue-500: #6488b9;
  --color-wisteria-blue-600: #55739c;
  --color-wisteria-blue-700: #445c7e;
  --color-wisteria-blue-800: #30445d;
  --color-wisteria-blue-900: #202f41;
  --color-wisteria-blue-950: #101b2a;
}

SCSS

$wisteria-blue: #7c9dcb;
$wisteria-blue-rgb: 124, 157, 203;
$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);
}