#497B92

CSS

:root {
  --cry-me-a-river: #497b92;
  --cry-me-a-river-rgb: 73 123 146;
  --cry-me-a-river-oklch: oklch(0.557 0.065 229.2);
}

.element {
  color: var(--cry-me-a-river);
  background-color: hsl(199 33% 43%);
  border-color: oklch(0.557 0.065 229.2);
}

Tailwind CSS v4

@theme {
  --color-cry-me-a-river: #497b92;
  --color-cry-me-a-river-50: #e4f9ff;
  --color-cry-me-a-river-100: #d3ecfa;
  --color-cry-me-a-river-200: #b9daeb;
  --color-cry-me-a-river-300: #96bed3;
  --color-cry-me-a-river-400: #76a6bd;
  --color-cry-me-a-river-500: #568fa9;
  --color-cry-me-a-river-600: #4a798e;
  --color-cry-me-a-river-700: #3b6172;
  --color-cry-me-a-river-800: #294754;
  --color-cry-me-a-river-900: #1b313a;
  --color-cry-me-a-river-950: #0c1d25;
}

SCSS

$cry-me-a-river: #497b92;
$cry-me-a-river-rgb: 73, 123, 146;
$cry-me-a-river-light: mix(#fff, $cry-me-a-river, 20%);
$cry-me-a-river-dark: mix(#000, $cry-me-a-river, 20%);

.element {
  color: $cry-me-a-river;
  box-shadow: 0 0 0 2px rgba($cry-me-a-river, 0.35);
}