Brisk Blue

CSS

:root {
  --brisk-blue: #6d829d;
  --brisk-blue-rgb: 109 130 157;
  --brisk-blue-oklch: oklch(0.6 0.048 254.9);
}

.element {
  color: var(--brisk-blue);
  background-color: hsl(214 20% 52%);
  border-color: oklch(0.6 0.048 254.9);
}

Tailwind CSS v4

@theme {
  --color-brisk-blue: #6d829d;
  --color-brisk-blue-50: #edf6ff;
  --color-brisk-blue-100: #dee9f8;
  --color-brisk-blue-200: #c7d5e9;
  --color-brisk-blue-300: #a8b9d0;
  --color-brisk-blue-400: #8ca0bb;
  --color-brisk-blue-500: #7188a6;
  --color-brisk-blue-600: #60738c;
  --color-brisk-blue-700: #4c5c70;
  --color-brisk-blue-800: #374453;
  --color-brisk-blue-900: #252f3a;
  --color-brisk-blue-950: #141b24;
}

SCSS

$brisk-blue: #6d829d;
$brisk-blue-rgb: 109, 130, 157;
$brisk-blue-light: mix(#fff, $brisk-blue, 20%);
$brisk-blue-dark: mix(#000, $brisk-blue, 20%);

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