Blue Quartz

CSS

:root {
  --blue-quartz: #335287;
  --blue-quartz-rgb: 51 82 135;
  --blue-quartz-oklch: oklch(0.441 0.095 260.5);
}

.element {
  color: var(--blue-quartz);
  background-color: hsl(218 45% 36%);
  border-color: oklch(0.441 0.095 260.5);
}

Tailwind CSS v4

@theme {
  --color-blue-quartz: #335287;
  --color-blue-quartz-50: #e7f6ff;
  --color-blue-quartz-100: #d7e9ff;
  --color-blue-quartz-200: #bfd5fe;
  --color-blue-quartz-300: #9db8e9;
  --color-blue-quartz-400: #7e9fd7;
  --color-blue-quartz-500: #6186c5;
  --color-blue-quartz-600: #5272a6;
  --color-blue-quartz-700: #425b86;
  --color-blue-quartz-800: #2e4363;
  --color-blue-quartz-900: #1f2e46;
  --color-blue-quartz-950: #0f1b2d;
}

SCSS

$blue-quartz: #335287;
$blue-quartz-rgb: 51, 82, 135;
$blue-quartz-light: mix(#fff, $blue-quartz, 20%);
$blue-quartz-dark: mix(#000, $blue-quartz, 20%);

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