#0083F3

CSS

:root {
  --too-blue-to-be-true: #0083f3;
  --too-blue-to-be-true-rgb: 0 131 243;
  --too-blue-to-be-true-oklch: oklch(0.613 0.193 253.6);
}

.element {
  color: var(--too-blue-to-be-true);
  background-color: hsl(208 100% 48%);
  border-color: oklch(0.613 0.193 253.6);
}

Tailwind CSS v4

@theme {
  --color-too-blue-to-be-true: #0083f3;
  --color-too-blue-to-be-true-50: #d1f8ff;
  --color-too-blue-to-be-true-100: #bdebff;
  --color-too-blue-to-be-true-200: #9cd8ff;
  --color-too-blue-to-be-true-300: #71b9ff;
  --color-too-blue-to-be-true-400: #3da0ff;
  --color-too-blue-to-be-true-500: #0084ff;
  --color-too-blue-to-be-true-600: #0070d8;
  --color-too-blue-to-be-true-700: #005aae;
  --color-too-blue-to-be-true-800: #004282;
  --color-too-blue-to-be-true-900: #002e5c;
  --color-too-blue-to-be-true-950: #001a3f;
}

SCSS

$too-blue-to-be-true: #0083f3;
$too-blue-to-be-true-rgb: 0, 131, 243;
$too-blue-to-be-true-light: mix(#fff, $too-blue-to-be-true, 20%);
$too-blue-to-be-true-dark: mix(#000, $too-blue-to-be-true, 20%);

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