Blackthorn Blue

CSS

:root {
  --blackthorn-blue: #4c606b;
  --blackthorn-blue-rgb: 76 96 107;
  --blackthorn-blue-oklch: oklch(0.477 0.03 232.3);
}

.element {
  color: var(--blackthorn-blue);
  background-color: hsl(201 17% 36%);
  border-color: oklch(0.477 0.03 232.3);
}

Tailwind CSS v4

@theme {
  --color-blackthorn-blue: #4c606b;
  --color-blackthorn-blue-50: #edf7fd;
  --color-blackthorn-blue-100: #dfeaf1;
  --color-blackthorn-blue-200: #c8d7df;
  --color-blackthorn-blue-300: #a9bac5;
  --color-blackthorn-blue-400: #8da2ad;
  --color-blackthorn-blue-500: #738a97;
  --color-blackthorn-blue-600: #617580;
  --color-blackthorn-blue-700: #4e5d66;
  --color-blackthorn-blue-800: #38454b;
  --color-blackthorn-blue-900: #262f34;
  --color-blackthorn-blue-950: #151c1f;
}

SCSS

$blackthorn-blue: #4c606b;
$blackthorn-blue-rgb: 76, 96, 107;
$blackthorn-blue-light: mix(#fff, $blackthorn-blue, 20%);
$blackthorn-blue-dark: mix(#000, $blackthorn-blue, 20%);

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