#A66256

CSS

:root {
  --dried-tomatoes: #a66256;
  --dried-tomatoes-rgb: 166 98 86;
  --dried-tomatoes-oklch: oklch(0.569 0.091 30.8);
}

.element {
  color: var(--dried-tomatoes);
  background-color: hsl(9 32% 49%);
  border-color: oklch(0.569 0.091 30.8);
}

Tailwind CSS v4

@theme {
  --color-dried-tomatoes: #a66256;
  --color-dried-tomatoes-50: #ffece5;
  --color-dried-tomatoes-100: #ffded5;
  --color-dried-tomatoes-200: #f9c7bc;
  --color-dried-tomatoes-300: #e2a79a;
  --color-dried-tomatoes-400: #cf8a7e;
  --color-dried-tomatoes-500: #bb6e61;
  --color-dried-tomatoes-600: #9e5e52;
  --color-dried-tomatoes-700: #7f4b42;
  --color-dried-tomatoes-800: #5e3630;
  --color-dried-tomatoes-900: #422521;
  --color-dried-tomatoes-950: #2a1310;
}

SCSS

$dried-tomatoes: #a66256;
$dried-tomatoes-rgb: 166, 98, 86;
$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);
}