#1EA8C7

CSS

:root {
  --pacific-blue: #1ea8c7;
  --pacific-blue-rgb: 30 168 199;
  --pacific-blue-oklch: oklch(0.677 0.116 218.2);
}

.element {
  color: var(--pacific-blue);
  background-color: hsl(191 74% 45%);
  border-color: oklch(0.677 0.116 218.2);
}

Tailwind CSS v4

@theme {
  --color-pacific-blue: #1ea8c7;
  --color-pacific-blue-50: #d1feff;
  --color-pacific-blue-100: #bef2ff;
  --color-pacific-blue-200: #9be1f7;
  --color-pacific-blue-300: #6dc6e1;
  --color-pacific-blue-400: #37afcc;
  --color-pacific-blue-500: #0097b9;
  --color-pacific-blue-600: #00809c;
  --color-pacific-blue-700: #00667d;
  --color-pacific-blue-800: #004c5c;
  --color-pacific-blue-900: #003540;
  --color-pacific-blue-950: #002029;
}

SCSS

$pacific-blue: #1ea8c7;
$pacific-blue-rgb: 30, 168, 199;
$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);
}