#7F9BCE

CSS

:root {
  --wisteria-blue: #7f9bce;
  --wisteria-blue-rgb: 127 155 206;
  --wisteria-blue-oklch: oklch(0.688 0.082 262.1);
}

.element {
  color: var(--wisteria-blue);
  background-color: hsl(219 45% 65%);
  border-color: oklch(0.688 0.082 262.1);
}

Tailwind CSS v4

@theme {
  --color-wisteria-blue: #7f9bce;
  --color-wisteria-blue-50: #e9f6ff;
  --color-wisteria-blue-100: #dae8ff;
  --color-wisteria-blue-200: #c3d5f8;
  --color-wisteria-blue-300: #a2b8e2;
  --color-wisteria-blue-400: #849fd0;
  --color-wisteria-blue-500: #6886bd;
  --color-wisteria-blue-600: #59729f;
  --color-wisteria-blue-700: #475b80;
  --color-wisteria-blue-800: #32435f;
  --color-wisteria-blue-900: #222e42;
  --color-wisteria-blue-950: #111b2b;
}

SCSS

$wisteria-blue: #7f9bce;
$wisteria-blue-rgb: 127, 155, 206;
$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);
}