Stratford Blue

CSS

:root {
  --stratford-blue: #528a9a;
  --stratford-blue-rgb: 82 138 154;
  --stratford-blue-oklch: oklch(0.601 0.064 218.1);
}

.element {
  color: var(--stratford-blue);
  background-color: hsl(193 31% 46%);
  border-color: oklch(0.601 0.064 218.1);
}

Tailwind CSS v4

@theme {
  --color-stratford-blue: #528a9a;
  --color-stratford-blue-50: #e2faff;
  --color-stratford-blue-100: #d2edf7;
  --color-stratford-blue-200: #b7dbe7;
  --color-stratford-blue-300: #94c0ce;
  --color-stratford-blue-400: #73a8b8;
  --color-stratford-blue-500: #5291a2;
  --color-stratford-blue-600: #467a89;
  --color-stratford-blue-700: #38626e;
  --color-stratford-blue-800: #274851;
  --color-stratford-blue-900: #1a3238;
  --color-stratford-blue-950: #0a1e23;
}

SCSS

$stratford-blue: #528a9a;
$stratford-blue-rgb: 82, 138, 154;
$stratford-blue-light: mix(#fff, $stratford-blue, 20%);
$stratford-blue-dark: mix(#000, $stratford-blue, 20%);

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