#009AA2

CSS

:root {
  --baltic: #009aa2;
  --baltic-rgb: 0 154 162;
  --baltic-oklch: oklch(0.624 0.106 201.3);
}

.element {
  color: var(--baltic);
  background-color: hsl(183 100% 32%);
  border-color: oklch(0.624 0.106 201.3);
}

Tailwind CSS v4

@theme {
  --color-baltic: #009aa2;
  --color-baltic-50: #d3ffff;
  --color-baltic-100: #bff3f8;
  --color-baltic-200: #9ee2e9;
  --color-baltic-300: #70c8d0;
  --color-baltic-400: #3fb1b8;
  --color-baltic-500: #009aa3;
  --color-baltic-600: #00828a;
  --color-baltic-700: #00686f;
  --color-baltic-800: #004d50;
  --color-baltic-900: #003638;
  --color-baltic-950: #002123;
}

SCSS

$baltic: #009aa2;
$baltic-rgb: 0, 154, 162;
$baltic-light: mix(#fff, $baltic, 20%);
$baltic-dark: mix(#000, $baltic, 20%);

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