#487B96

CSS

:root {
  --cry-me-a-river: #487b96;
  --cry-me-a-river-rgb: 72 123 150;
  --cry-me-a-river-oklch: oklch(0.558 0.069 233);
}

.element {
  color: var(--cry-me-a-river);
  background-color: hsl(201 35% 44%);
  border-color: oklch(0.558 0.069 233);
}

Tailwind CSS v4

@theme {
  --color-cry-me-a-river: #487b96;
  --color-cry-me-a-river-50: #e3f9ff;
  --color-cry-me-a-river-100: #d3ecfc;
  --color-cry-me-a-river-200: #b9daee;
  --color-cry-me-a-river-300: #96bed6;
  --color-cry-me-a-river-400: #75a6c1;
  --color-cry-me-a-river-500: #558ead;
  --color-cry-me-a-river-600: #487892;
  --color-cry-me-a-river-700: #3a6075;
  --color-cry-me-a-river-800: #284756;
  --color-cry-me-a-river-900: #1b313c;
  --color-cry-me-a-river-950: #0b1d26;
}

SCSS

$cry-me-a-river: #487b96;
$cry-me-a-river-rgb: 72, 123, 150;
$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);
}