#E4ECE0

CSS

:root {
  --hint-of-green: #e4ece0;
  --hint-of-green-rgb: 228 236 224;
  --hint-of-green-oklch: oklch(0.934 0.018 134.9);
}

.element {
  color: var(--hint-of-green);
  background-color: hsl(100 24% 90%);
  border-color: oklch(0.934 0.018 134.9);
}

Tailwind CSS v4

@theme {
  --color-hint-of-green: #e4ece0;
  --color-hint-of-green-50: #f3f6f1;
  --color-hint-of-green-100: #e5e9e3;
  --color-hint-of-green-200: #d1d6cf;
  --color-hint-of-green-300: #b3bab1;
  --color-hint-of-green-400: #9aa196;
  --color-hint-of-green-500: #81897d;
  --color-hint-of-green-600: #6d746a;
  --color-hint-of-green-700: #575d55;
  --color-hint-of-green-800: #40443d;
  --color-hint-of-green-900: #2c2f2a;
  --color-hint-of-green-950: #191b18;
}

SCSS

$hint-of-green: #e4ece0;
$hint-of-green-rgb: 228, 236, 224;
$hint-of-green-light: mix(#fff, $hint-of-green, 20%);
$hint-of-green-dark: mix(#000, $hint-of-green, 20%);

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