#628EDB

CSS

:root {
  --blue-jay: #628edb;
  --blue-jay-rgb: 98 142 219;
  --blue-jay-oklch: oklch(0.649 0.126 261);
}

.element {
  color: var(--blue-jay);
  background-color: hsl(218 63% 62%);
  border-color: oklch(0.649 0.126 261);
}

Tailwind CSS v4

@theme {
  --color-blue-jay: #628edb;
  --color-blue-jay-50: #e2f6ff;
  --color-blue-jay-100: #d2e9ff;
  --color-blue-jay-200: #b8d5ff;
  --color-blue-jay-300: #95b7f8;
  --color-blue-jay-400: #739ee8;
  --color-blue-jay-500: #5584d9;
  --color-blue-jay-600: #4870b7;
  --color-blue-jay-700: #395a93;
  --color-blue-jay-800: #26426d;
  --color-blue-jay-900: #1a2e4d;
  --color-blue-jay-950: #0a1a33;
}

SCSS

$blue-jay: #628edb;
$blue-jay-rgb: 98, 142, 219;
$blue-jay-light: mix(#fff, $blue-jay, 20%);
$blue-jay-dark: mix(#000, $blue-jay, 20%);

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