#A66659

CSS

:root {
  --dried-tomatoes: #a66659;
  --dried-tomatoes-rgb: 166 102 89;
  --dried-tomatoes-oklch: oklch(0.577 0.086 32.2);
}

.element {
  color: var(--dried-tomatoes);
  background-color: hsl(10 30% 50%);
  border-color: oklch(0.577 0.086 32.2);
}

Tailwind CSS v4

@theme {
  --color-dried-tomatoes: #a66659;
  --color-dried-tomatoes-50: #ffede5;
  --color-dried-tomatoes-100: #ffded5;
  --color-dried-tomatoes-200: #f7c8bc;
  --color-dried-tomatoes-300: #e0a89b;
  --color-dried-tomatoes-400: #cc8c7e;
  --color-dried-tomatoes-500: #b87062;
  --color-dried-tomatoes-600: #9b5f53;
  --color-dried-tomatoes-700: #7d4c42;
  --color-dried-tomatoes-800: #5d3730;
  --color-dried-tomatoes-900: #412521;
  --color-dried-tomatoes-950: #291410;
}

SCSS

$dried-tomatoes: #a66659;
$dried-tomatoes-rgb: 166, 102, 89;
$dried-tomatoes-light: mix(#fff, $dried-tomatoes, 20%);
$dried-tomatoes-dark: mix(#000, $dried-tomatoes, 20%);

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