Dirty Blue

CSS

:root {
  --dirty-blue: #3f829d;
  --dirty-blue-rgb: 63 130 157;
  --dirty-blue-oklch: oklch(0.574 0.079 227);
}

.element {
  color: var(--dirty-blue);
  background-color: hsl(197 43% 43%);
  border-color: oklch(0.574 0.079 227);
}

Tailwind CSS v4

@theme {
  --color-dirty-blue: #3f829d;
  --color-dirty-blue-50: #dffaff;
  --color-dirty-blue-100: #ceeefd;
  --color-dirty-blue-200: #b2dcf0;
  --color-dirty-blue-300: #8dc0d8;
  --color-dirty-blue-400: #6aa8c3;
  --color-dirty-blue-500: #4591af;
  --color-dirty-blue-600: #3c7a94;
  --color-dirty-blue-700: #2f6277;
  --color-dirty-blue-800: #204857;
  --color-dirty-blue-900: #15323d;
  --color-dirty-blue-950: #061e26;
}

SCSS

$dirty-blue: #3f829d;
$dirty-blue-rgb: 63, 130, 157;
$dirty-blue-light: mix(#fff, $dirty-blue, 20%);
$dirty-blue-dark: mix(#000, $dirty-blue, 20%);

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