#5E9DEB

CSS

:root {
  --blue-bay: #5e9deb;
  --blue-bay-rgb: 94 157 235;
  --blue-bay-oklch: oklch(0.688 0.133 254.6);
}

.element {
  color: var(--blue-bay);
  background-color: hsl(213 78% 65%);
  border-color: oklch(0.688 0.133 254.6);
}

Tailwind CSS v4

@theme {
  --color-blue-bay: #5e9deb;
  --color-blue-bay-50: #ddf7ff;
  --color-blue-bay-100: #cceaff;
  --color-blue-bay-200: #b0d7ff;
  --color-blue-bay-300: #8bbafb;
  --color-blue-bay-400: #65a1eb;
  --color-blue-bay-500: #4187dc;
  --color-blue-bay-600: #3873b9;
  --color-blue-bay-700: #2d5c95;
  --color-blue-bay-800: #1c446f;
  --color-blue-bay-900: #122f4e;
  --color-blue-bay-950: #041b34;
}

SCSS

$blue-bay: #5e9deb;
$blue-bay-rgb: 94, 157, 235;
$blue-bay-light: mix(#fff, $blue-bay, 20%);
$blue-bay-dark: mix(#000, $blue-bay, 20%);

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