Velvet Evening

CSS

:root {
  --velvet-evening: #33505e;
  --velvet-evening-rgb: 51 80 94;
  --velvet-evening-oklch: oklch(0.414 0.042 229.9);
}

.element {
  color: var(--velvet-evening);
  background-color: hsl(200 30% 28%);
  border-color: oklch(0.414 0.042 229.9);
}

Tailwind CSS v4

@theme {
  --color-velvet-evening: #33505e;
  --color-velvet-evening-50: #eaf8ff;
  --color-velvet-evening-100: #dbebf4;
  --color-velvet-evening-200: #c3d8e3;
  --color-velvet-evening-300: #a3bcc9;
  --color-velvet-evening-400: #86a4b3;
  --color-velvet-evening-500: #6a8c9d;
  --color-velvet-evening-600: #5a7685;
  --color-velvet-evening-700: #485f6a;
  --color-velvet-evening-800: #33454e;
  --color-velvet-evening-900: #233036;
  --color-velvet-evening-950: #121c21;
}

SCSS

$velvet-evening: #33505e;
$velvet-evening-rgb: 51, 80, 94;
$velvet-evening-light: mix(#fff, $velvet-evening, 20%);
$velvet-evening-dark: mix(#000, $velvet-evening, 20%);

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