#A3645A

CSS

:root {
  --dried-tomatoes: #a3645a;
  --dried-tomatoes-rgb: 163 100 90;
  --dried-tomatoes-oklch: oklch(0.57 0.084 29.6);
}

.element {
  color: var(--dried-tomatoes);
  background-color: hsl(8 29% 50%);
  border-color: oklch(0.57 0.084 29.6);
}

Tailwind CSS v4

@theme {
  --color-dried-tomatoes: #a3645a;
  --color-dried-tomatoes-50: #ffede7;
  --color-dried-tomatoes-100: #ffded7;
  --color-dried-tomatoes-200: #f6c8be;
  --color-dried-tomatoes-300: #dfa89d;
  --color-dried-tomatoes-400: #cb8c81;
  --color-dried-tomatoes-500: #b77065;
  --color-dried-tomatoes-600: #9b5f56;
  --color-dried-tomatoes-700: #7c4c44;
  --color-dried-tomatoes-800: #5c3732;
  --color-dried-tomatoes-900: #412522;
  --color-dried-tomatoes-950: #291411;
}

SCSS

$dried-tomatoes: #a3645a;
$dried-tomatoes-rgb: 163, 100, 90;
$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);
}