Portsmouth Blue

CSS

:root {
  --portsmouth-blue: #5b7074;
  --portsmouth-blue-rgb: 91 112 116;
  --portsmouth-blue-oklch: oklch(0.53 0.026 210.5);
}

.element {
  color: var(--portsmouth-blue);
  background-color: hsl(190 12% 41%);
  border-color: oklch(0.53 0.026 210.5);
}

Tailwind CSS v4

@theme {
  --color-portsmouth-blue: #5b7074;
  --color-portsmouth-blue-50: #edf7f9;
  --color-portsmouth-blue-100: #dfeaed;
  --color-portsmouth-blue-200: #c9d7db;
  --color-portsmouth-blue-300: #a9bbbf;
  --color-portsmouth-blue-400: #8ea3a7;
  --color-portsmouth-blue-500: #738b90;
  --color-portsmouth-blue-600: #62767a;
  --color-portsmouth-blue-700: #4e5e61;
  --color-portsmouth-blue-800: #384547;
  --color-portsmouth-blue-900: #273031;
  --color-portsmouth-blue-950: #151c1d;
}

SCSS

$portsmouth-blue: #5b7074;
$portsmouth-blue-rgb: 91, 112, 116;
$portsmouth-blue-light: mix(#fff, $portsmouth-blue, 20%);
$portsmouth-blue-dark: mix(#000, $portsmouth-blue, 20%);

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