#9699B6

CSS

:root {
  --machinery: #9699b6;
  --machinery-rgb: 150 153 182;
  --machinery-oklch: oklch(0.69 0.043 280.6);
}

.element {
  color: var(--machinery);
  background-color: hsl(234 18% 65%);
  border-color: oklch(0.69 0.043 280.6);
}

Tailwind CSS v4

@theme {
  --color-machinery: #9699b6;
  --color-machinery-50: #f3f4ff;
  --color-machinery-100: #e5e6f6;
  --color-machinery-200: #d1d2e7;
  --color-machinery-300: #b4b5cd;
  --color-machinery-400: #999cb8;
  --color-machinery-500: #8083a2;
  --color-machinery-600: #6d6f89;
  --color-machinery-700: #57596e;
  --color-machinery-800: #3f4151;
  --color-machinery-900: #2b2d39;
  --color-machinery-950: #191a23;
}

SCSS

$machinery: #9699b6;
$machinery-rgb: 150, 153, 182;
$machinery-light: mix(#fff, $machinery, 20%);
$machinery-dark: mix(#000, $machinery, 20%);

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