#E3E6DF

CSS

:root {
  --silence: #e3e6df;
  --silence-rgb: 227 230 223;
  --silence-oklch: oklch(0.921 0.01 125.7);
}

.element {
  color: var(--silence);
  background-color: hsl(86 12% 89%);
  border-color: oklch(0.921 0.01 125.7);
}

Tailwind CSS v4

@theme {
  --color-silence: #e3e6df;
  --color-silence-50: #f4f6f3;
  --color-silence-100: #e7e8e5;
  --color-silence-200: #d3d5d1;
  --color-silence-300: #b6b8b3;
  --color-silence-400: #9d9f99;
  --color-silence-500: #848780;
  --color-silence-600: #70736d;
  --color-silence-700: #5a5c57;
  --color-silence-800: #42433f;
  --color-silence-900: #2d2e2c;
  --color-silence-950: #1a1b19;
}

SCSS

$silence: #e3e6df;
$silence-rgb: 227, 230, 223;
$silence-light: mix(#fff, $silence, 20%);
$silence-dark: mix(#000, $silence, 20%);

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