Blue Radiance

CSS

:root {
  --blue-radiance: #58cfd4;
  --blue-radiance-rgb: 88 207 212;
  --blue-radiance-oklch: oklch(0.789 0.106 199.1);
}

.element {
  color: var(--blue-radiance);
  background-color: hsl(182 59% 59%);
  border-color: oklch(0.789 0.106 199.1);
}

Tailwind CSS v4

@theme {
  --color-blue-radiance: #58cfd4;
  --color-blue-radiance-50: #d3ffff;
  --color-blue-radiance-100: #bff3f6;
  --color-blue-radiance-200: #9ee2e7;
  --color-blue-radiance-300: #70c8ce;
  --color-blue-radiance-400: #3fb1b6;
  --color-blue-radiance-500: #009ba1;
  --color-blue-radiance-600: #008388;
  --color-blue-radiance-700: #00696d;
  --color-blue-radiance-800: #004d4f;
  --color-blue-radiance-900: #003637;
  --color-blue-radiance-950: #002122;
}

SCSS

$blue-radiance: #58cfd4;
$blue-radiance-rgb: 88, 207, 212;
$blue-radiance-light: mix(#fff, $blue-radiance, 20%);
$blue-radiance-dark: mix(#000, $blue-radiance, 20%);

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