Blue Nuance

CSS

:root {
  --blue-nuance: #d2dde0;
  --blue-nuance-rgb: 210 221 224;
  --blue-nuance-oklch: oklch(0.89 0.013 215.8);
}

.element {
  color: var(--blue-nuance);
  background-color: hsl(193 18% 85%);
  border-color: oklch(0.89 0.013 215.8);
}

Tailwind CSS v4

@theme {
  --color-blue-nuance: #d2dde0;
  --color-blue-nuance-50: #f1f6f7;
  --color-blue-nuance-100: #e3e9eb;
  --color-blue-nuance-200: #cfd6d8;
  --color-blue-nuance-300: #b1b9bc;
  --color-blue-nuance-400: #97a0a3;
  --color-blue-nuance-500: #7d888b;
  --color-blue-nuance-600: #6a7376;
  --color-blue-nuance-700: #555c5e;
  --color-blue-nuance-800: #3e4445;
  --color-blue-nuance-900: #2a2f30;
  --color-blue-nuance-950: #181b1c;
}

SCSS

$blue-nuance: #d2dde0;
$blue-nuance-rgb: 210, 221, 224;
$blue-nuance-light: mix(#fff, $blue-nuance, 20%);
$blue-nuance-dark: mix(#000, $blue-nuance, 20%);

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