#0F8DF5

CSS

:root {
  --too-blue-to-be-true: #0f8df5;
  --too-blue-to-be-true-rgb: 15 141 245;
  --too-blue-to-be-true-oklch: oklch(0.637 0.183 251.4);
}

.element {
  color: var(--too-blue-to-be-true);
  background-color: hsl(207 92% 51%);
  border-color: oklch(0.637 0.183 251.4);
}

Tailwind CSS v4

@theme {
  --color-too-blue-to-be-true: #0f8df5;
  --color-too-blue-to-be-true-50: #d1f9ff;
  --color-too-blue-to-be-true-100: #bdecff;
  --color-too-blue-to-be-true-200: #9cd9ff;
  --color-too-blue-to-be-true-300: #70bbff;
  --color-too-blue-to-be-true-400: #3ba2ff;
  --color-too-blue-to-be-true-500: #0086f9;
  --color-too-blue-to-be-true-600: #0072d2;
  --color-too-blue-to-be-true-700: #005ba9;
  --color-too-blue-to-be-true-800: #00437e;
  --color-too-blue-to-be-true-900: #002f59;
  --color-too-blue-to-be-true-950: #001b3c;
}

SCSS

$too-blue-to-be-true: #0f8df5;
$too-blue-to-be-true-rgb: 15, 141, 245;
$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);
}