#1C93AE

CSS

:root {
  --munsell-blue: #1c93ae;
  --munsell-blue-rgb: 28 147 174;
  --munsell-blue-oklch: oklch(0.614 0.104 218);
}

.element {
  color: var(--munsell-blue);
  background-color: hsl(191 72% 40%);
  border-color: oklch(0.614 0.104 218);
}

Tailwind CSS v4

@theme {
  --color-munsell-blue: #1c93ae;
  --color-munsell-blue-50: #d5fdff;
  --color-munsell-blue-100: #c2f1ff;
  --color-munsell-blue-200: #a2dff3;
  --color-munsell-blue-300: #77c4dc;
  --color-munsell-blue-400: #4aadc7;
  --color-munsell-blue-500: #0096b4;
  --color-munsell-blue-600: #007f98;
  --color-munsell-blue-700: #04667a;
  --color-munsell-blue-800: #004b59;
  --color-munsell-blue-900: #02343e;
  --color-munsell-blue-950: #001f28;
}

SCSS

$munsell-blue: #1c93ae;
$munsell-blue-rgb: 28, 147, 174;
$munsell-blue-light: mix(#fff, $munsell-blue, 20%);
$munsell-blue-dark: mix(#000, $munsell-blue, 20%);

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