#007FC7

CSS

:root {
  --honolulu-blue: #007fc7;
  --honolulu-blue-rgb: 0 127 199;
  --honolulu-blue-oklch: oklch(0.576 0.144 244.6);
}

.element {
  color: var(--honolulu-blue);
  background-color: hsl(202 100% 39%);
  border-color: oklch(0.576 0.144 244.6);
}

Tailwind CSS v4

@theme {
  --color-honolulu-blue: #007fc7;
  --color-honolulu-blue-50: #d5faff;
  --color-honolulu-blue-100: #c2edff;
  --color-honolulu-blue-200: #a2dbff;
  --color-honolulu-blue-300: #77befd;
  --color-honolulu-blue-400: #48a6ed;
  --color-honolulu-blue-500: #008ddd;
  --color-honolulu-blue-600: #0377bb;
  --color-honolulu-blue-700: #065f96;
  --color-honolulu-blue-800: #00466f;
  --color-honolulu-blue-900: #00314e;
  --color-honolulu-blue-950: #001d34;
}

SCSS

$honolulu-blue: #007fc7;
$honolulu-blue-rgb: 0, 127, 199;
$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);
}