#A5A091

CSS

:root {
  --sage-the-day: #a5a091;
  --sage-the-day-rgb: 165 160 145;
  --sage-the-day-oklch: oklch(0.706 0.022 91.7);
}

.element {
  color: var(--sage-the-day);
  background-color: hsl(45 10% 61%);
  border-color: oklch(0.706 0.022 91.7);
}

Tailwind CSS v4

@theme {
  --color-sage-the-day: #a5a091;
  --color-sage-the-day-50: #f7f5ee;
  --color-sage-the-day-100: #eae8e0;
  --color-sage-the-day-200: #d7d4ca;
  --color-sage-the-day-300: #bbb7ab;
  --color-sage-the-day-400: #a39e90;
  --color-sage-the-day-500: #8b8676;
  --color-sage-the-day-600: #767164;
  --color-sage-the-day-700: #5e5b50;
  --color-sage-the-day-800: #45423a;
  --color-sage-the-day-900: #302e28;
  --color-sage-the-day-950: #1c1a16;
}

SCSS

$sage-the-day: #a5a091;
$sage-the-day-rgb: 165, 160, 145;
$sage-the-day-light: mix(#fff, $sage-the-day, 20%);
$sage-the-day-dark: mix(#000, $sage-the-day, 20%);

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