Brilliant Blue

CSS

:root {
  --brilliant-blue: #0075b3;
  --brilliant-blue-rgb: 0 117 179;
  --brilliant-blue-oklch: oklch(0.54 0.13 242.7);
}

.element {
  color: var(--brilliant-blue);
  background-color: hsl(201 100% 35%);
  border-color: oklch(0.54 0.13 242.7);
}

Tailwind CSS v4

@theme {
  --color-brilliant-blue: #0075b3;
  --color-brilliant-blue-50: #d7faff;
  --color-brilliant-blue-100: #c4edff;
  --color-brilliant-blue-200: #a5dbff;
  --color-brilliant-blue-300: #7cbff5;
  --color-brilliant-blue-400: #51a7e4;
  --color-brilliant-blue-500: #178ed4;
  --color-brilliant-blue-600: #1978b3;
  --color-brilliant-blue-700: #156090;
  --color-brilliant-blue-800: #07476b;
  --color-brilliant-blue-900: #05314b;
  --color-brilliant-blue-950: #001d31;
}

SCSS

$brilliant-blue: #0075b3;
$brilliant-blue-rgb: 0, 117, 179;
$brilliant-blue-light: mix(#fff, $brilliant-blue, 20%);
$brilliant-blue-dark: mix(#000, $brilliant-blue, 20%);

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