#027692

CSS

:root {
  --celestial: #027692;
  --celestial-rgb: 2 118 146;
  --celestial-oklch: oklch(0.525 0.097 222.1);
}

.element {
  color: var(--celestial);
  background-color: hsl(192 97% 29%);
  border-color: oklch(0.525 0.097 222.1);
}

Tailwind CSS v4

@theme {
  --color-celestial: #027692;
  --color-celestial-50: #d9fcff;
  --color-celestial-100: #c6f0ff;
  --color-celestial-200: #a8def3;
  --color-celestial-300: #7fc3dc;
  --color-celestial-400: #56abc7;
  --color-celestial-500: #2294b4;
  --color-celestial-600: #217d98;
  --color-celestial-700: #1a647a;
  --color-celestial-800: #0f4a59;
  --color-celestial-900: #0a333f;
  --color-celestial-950: #001f28;
}

SCSS

$celestial: #027692;
$celestial-rgb: 2, 118, 146;
$celestial-light: mix(#fff, $celestial, 20%);
$celestial-dark: mix(#000, $celestial, 20%);

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