Light Steel Blue

CSS

:root {
  --light-steel-blue: #b0c4de;
  --light-steel-blue-rgb: 176 196 222;
  --light-steel-blue-oklch: oklch(0.814 0.043 255);
}

.element {
  color: var(--light-steel-blue);
  background-color: hsl(214 41% 78%);
  border-color: oklch(0.814 0.043 255);
}

Tailwind CSS v4

@theme {
  --color-light-steel-blue: #b0c4de;
  --color-light-steel-blue-50: #eef6ff;
  --color-light-steel-blue-100: #dfe9f7;
  --color-light-steel-blue-200: #c9d5e7;
  --color-light-steel-blue-300: #aab9ce;
  --color-light-steel-blue-400: #8ea0b8;
  --color-light-steel-blue-500: #7388a3;
  --color-light-steel-blue-600: #627389;
  --color-light-steel-blue-700: #4e5c6e;
  --color-light-steel-blue-800: #384351;
  --color-light-steel-blue-900: #262f39;
  --color-light-steel-blue-950: #151b23;
}

SCSS

$light-steel-blue: #b0c4de;
$light-steel-blue-rgb: 176, 196, 222;
$light-steel-blue-light: mix(#fff, $light-steel-blue, 20%);
$light-steel-blue-dark: mix(#000, $light-steel-blue, 20%);

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