Matte Blue

CSS

:root {
  --matte-blue: #8fb0ce;
  --matte-blue-rgb: 143 176 206;
  --matte-blue-oklch: oklch(0.743 0.057 246.1);
}

.element {
  color: var(--matte-blue);
  background-color: hsl(209 39% 68%);
  border-color: oklch(0.743 0.057 246.1);
}

Tailwind CSS v4

@theme {
  --color-matte-blue: #8fb0ce;
  --color-matte-blue-50: #e9f7ff;
  --color-matte-blue-100: #daeafa;
  --color-matte-blue-200: #c2d7ec;
  --color-matte-blue-300: #a1bbd4;
  --color-matte-blue-400: #83a2be;
  --color-matte-blue-500: #678aaa;
  --color-matte-blue-600: #587590;
  --color-matte-blue-700: #465e73;
  --color-matte-blue-800: #324555;
  --color-matte-blue-900: #22303b;
  --color-matte-blue-950: #111c25;
}

SCSS

$matte-blue: #8fb0ce;
$matte-blue-rgb: 143, 176, 206;
$matte-blue-light: mix(#fff, $matte-blue, 20%);
$matte-blue-dark: mix(#000, $matte-blue, 20%);

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