#207CB6

CSS

:root {
  --honolulu-blue: #207cb6;
  --honolulu-blue-rgb: 32 124 182;
  --honolulu-blue-oklch: oklch(0.563 0.122 242.3);
}

.element {
  color: var(--honolulu-blue);
  background-color: hsl(203 70% 42%);
  border-color: oklch(0.563 0.122 242.3);
}

Tailwind CSS v4

@theme {
  --color-honolulu-blue: #207cb6;
  --color-honolulu-blue-50: #d9faff;
  --color-honolulu-blue-100: #c6edff;
  --color-honolulu-blue-200: #a8dbff;
  --color-honolulu-blue-300: #80bef1;
  --color-honolulu-blue-400: #57a6e0;
  --color-honolulu-blue-500: #268ecf;
  --color-honolulu-blue-600: #2478af;
  --color-honolulu-blue-700: #1d608c;
  --color-honolulu-blue-800: #0f4768;
  --color-honolulu-blue-900: #093149;
  --color-honolulu-blue-950: #001d30;
}

SCSS

$honolulu-blue: #207cb6;
$honolulu-blue-rgb: 32, 124, 182;
$honolulu-blue-light: mix(#fff, $honolulu-blue, 20%);
$honolulu-blue-dark: mix(#000, $honolulu-blue, 20%);

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