#40A7C5

CSS

:root {
  --pacific-blue: #40a7c5;
  --pacific-blue-rgb: 64 167 197;
  --pacific-blue-oklch: oklch(0.681 0.103 220.7);
}

.element {
  color: var(--pacific-blue);
  background-color: hsl(194 53% 51%);
  border-color: oklch(0.681 0.103 220.7);
}

Tailwind CSS v4

@theme {
  --color-pacific-blue: #40a7c5;
  --color-pacific-blue-50: #d6fcff;
  --color-pacific-blue-100: #c4f0ff;
  --color-pacific-blue-200: #a4dff4;
  --color-pacific-blue-300: #7ac3de;
  --color-pacific-blue-400: #4eacc9;
  --color-pacific-blue-500: #0295b6;
  --color-pacific-blue-600: #0e7e99;
  --color-pacific-blue-700: #0d657b;
  --color-pacific-blue-800: #044a5a;
  --color-pacific-blue-900: #04343f;
  --color-pacific-blue-950: #001f28;
}

SCSS

$pacific-blue: #40a7c5;
$pacific-blue-rgb: 64, 167, 197;
$pacific-blue-light: mix(#fff, $pacific-blue, 20%);
$pacific-blue-dark: mix(#000, $pacific-blue, 20%);

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