Guilliman Blue

CSS

:root {
  --guilliman-blue: #6495ed;
  --guilliman-blue-rgb: 100 149 237;
  --guilliman-blue-oklch: oklch(0.675 0.141 261.3);
}

.element {
  color: var(--guilliman-blue);
  background-color: hsl(219 79% 66%);
  border-color: oklch(0.675 0.141 261.3);
}

Tailwind CSS v4

@theme {
  --color-guilliman-blue: #6495ed;
  --color-guilliman-blue-50: #e0f6ff;
  --color-guilliman-blue-100: #d0e9ff;
  --color-guilliman-blue-200: #b5d4ff;
  --color-guilliman-blue-300: #92b7ff;
  --color-guilliman-blue-400: #6e9df1;
  --color-guilliman-blue-500: #4e83e3;
  --color-guilliman-blue-600: #436fbf;
  --color-guilliman-blue-700: #35599a;
  --color-guilliman-blue-800: #234173;
  --color-guilliman-blue-900: #172d51;
  --color-guilliman-blue-950: #081a36;
}

SCSS

$guilliman-blue: #6495ed;
$guilliman-blue-rgb: 100, 149, 237;
$guilliman-blue-light: mix(#fff, $guilliman-blue, 20%);
$guilliman-blue-dark: mix(#000, $guilliman-blue, 20%);

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