#096CC7

CSS

:root {
  --matt-blue: #096cc7;
  --matt-blue-rgb: 9 108 199;
  --matt-blue-oklch: oklch(0.533 0.163 253.5);
}

.element {
  color: var(--matt-blue);
  background-color: hsl(209 91% 41%);
  border-color: oklch(0.533 0.163 253.5);
}

Tailwind CSS v4

@theme {
  --color-matt-blue: #096cc7;
  --color-matt-blue-50: #d7f8ff;
  --color-matt-blue-100: #c4ebff;
  --color-matt-blue-200: #a6d8ff;
  --color-matt-blue-300: #7dbaff;
  --color-matt-blue-400: #52a1fb;
  --color-matt-blue-500: #2086ee;
  --color-matt-blue-600: #1e72c8;
  --color-matt-blue-700: #185ba1;
  --color-matt-blue-800: #084378;
  --color-matt-blue-900: #062f55;
  --color-matt-blue-950: #001b39;
}

SCSS

$matt-blue: #096cc7;
$matt-blue-rgb: 9, 108, 199;
$matt-blue-light: mix(#fff, $matt-blue, 20%);
$matt-blue-dark: mix(#000, $matt-blue, 20%);

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