Butterfly Blue

CSS

:root {
  --butterfly-blue: #2099bb;
  --butterfly-blue-rgb: 32 153 187;
  --butterfly-blue-oklch: oklch(0.636 0.111 222.5);
}

.element {
  color: var(--butterfly-blue);
  background-color: hsl(193 71% 43%);
  border-color: oklch(0.636 0.111 222.5);
}

Tailwind CSS v4

@theme {
  --color-butterfly-blue: #2099bb;
  --color-butterfly-blue-50: #d4fdff;
  --color-butterfly-blue-100: #c1f1ff;
  --color-butterfly-blue-200: #a1dff8;
  --color-butterfly-blue-300: #75c4e2;
  --color-butterfly-blue-400: #46adcd;
  --color-butterfly-blue-500: #0095bb;
  --color-butterfly-blue-600: #007e9e;
  --color-butterfly-blue-700: #00657e;
  --color-butterfly-blue-800: #004b5d;
  --color-butterfly-blue-900: #003441;
  --color-butterfly-blue-950: #001f2a;
}

SCSS

$butterfly-blue: #2099bb;
$butterfly-blue-rgb: 32, 153, 187;
$butterfly-blue-light: mix(#fff, $butterfly-blue, 20%);
$butterfly-blue-dark: mix(#000, $butterfly-blue, 20%);

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